Carbon compliance consultancy — and the nine regimes it has to cover
There is no single UK carbon compliance law, and that is the whole difficulty: a British company can sit inside nine separate regimes at once, each with its own trigger, its own calendar, its own regulator and its own consequence — and almost no organisation is inside all nine.
This page sets out all nine — who each one catches, what each costs to get wrong, and how to scope and choose the help — every figure traced to its source.
No single carbon law — nine regimes with nine different triggers
“Carbon compliance” is not a legal term.
It is shorthand for the set of separate UK obligations that require an organisation to measure greenhouse gas emissions or energy use, disclose them somewhere a third party can read, surrender something of value against them, or improve against a target — and whether any of them applies to you turns entirely on facts about your organisation, not on your industry or your intentions.
A carbon compliance consultancy engagement is, in practice, the work of answering those questions in order and then building one set of data good enough to satisfy every obligation that turns out to apply.
Seven statutes. Four regulators. One set of data.
The question is never whether carbon compliance applies. It is which parts, and from when.
Descending into the regimes
Nine regimes, and the single fact that switches each one on
Read this as a set of switches rather than a syllabus.
The facts that flip them are ordinary ones: how many people you employ, what you turn over, whether you are listed and in which category, how much energy you use, whether you operate a permitted installation, whether you import certain goods, whether you let commercial property, and whether you bid for central government work.
Each fact opens a different door, and the doors do not line up — which is why an organisation can be comfortably compliant with the one regime it knows about and in breach of two it has never heard of.
Each row names the trigger — the one fact that decides whether the regime is yours — and the status column separates what is law today from what has only been consulted on, because the second most expensive mistake on this subject is preparing for a rule that has not been made.
Two things on that list are commonly misfiled.
A Climate Change Agreement is relief, not burden — it is the one regime organisations should be checking whether they can join.
And UK SRS is not yet mandatory for anyone, a distinction the rest of this page keeps making because the market has already stopped making it.
The numbers that decide it — and the trap sitting inside them
Every threshold below is a bright line in a statutory instrument, not a rule of thumb.
This divergence is the single most common in-scope error we would expect an adviser to catch in the first week, and it is the kind of thing that only shows up when somebody reads the schedule rather than the summary.
The disclosure that goes in the accounts, and is checked by almost nobody
Streamlined Energy and Carbon Reporting is the regime most UK companies meet first, because it rides inside a document they already have to file.
A large unquoted company or LLP discloses UK energy use in kWh, the associated Scope 1 and Scope 2 emissions, at least one intensity ratio, the methodology used, and the energy efficiency action taken in the year — with the prior year alongside after the first.
A quoted company does the same on a global basis, splits UK and offshore out, and gets no size threshold to hide behind.
The conversion factors that turn kWh into tonnes are published each year by DESNZ, and the 2026 set landed on 11 June 2026 (GOV.UK).
That set carries a methodology break worth knowing about before you draw a trend line: the UK electricity CO2e factor fell about 26%, roughly two-thirds of which is real grid decarbonisation and the rest a change that cut the data lag from two years to one (DESNZ major changes report, 2026).
The guidance that frames what a SECR disclosure must contain is still the 2019 edition of the Environmental Reporting Guidelines — last substantively updated on 29 March 2019, and credited to a department that no longer exists (DESNZ / Defra).
DESNZ’s May 2026 post-implementation review recommends retaining SECR with amendments and promises a consultation on reducing duplication with other regimes; nothing has been proposed in draft and nothing has been enacted (DESNZ PIR, 15 May 2026).
An audit with a hard date, and a regulator that actually issues penalties
ESOS is the one carbon-adjacent regime with a named regulator, a published penalty schedule and a register of organisations that have been fined.
Phase 4 runs from 6 December 2023 to 5 December 2027, with qualification tested on 31 December 2026 and the notification of compliance due by 5 December 2027 (Environment Agency).
The audit must cover total energy consumption, or — if you take the de minimis election — at least 95% of it, a threshold raised from 90% for Phase 3 and unchanged since (SI 2023/1182, reg. 13(b)).
Two routes satisfy it: an ESOS energy audit signed by a lead assessor from an approved register, or ISO 50001 certification covering total or significant consumption.
Phase 4 also adds work after the audit: you must report the energy savings actually achieved in the compliance period, and complete an action plan review naming the measures you did not implement and why.
The downstream dates are derived from the regulations rather than published by the Environment Agency — applying reg. 34B to Phase 4 gives an action plan by 5 December 2028, progress updates by 5 December 2029 and 2030, and a final progress update by 5 December 2031 (SI 2026/701, reg. 28).
DESNZ’s 2025 review of Phase 3 gives the only official measure of how well this is complied with: 8,581 of 9,871 qualifying corporate groups filed a notification, and of those, 76% filed an action plan (ESOS post-implementation review, 18 Jul 2025).
The regime where the carbon has a price and the deadline has teeth
Everything else on this page asks you to report a number.
The UK Emissions Trading Scheme asks you to buy and surrender an allowance for every tonne, which makes it the only regime on the list with a direct, unavoidable cash cost.
The compliance year has four fixed dates: monitoring-plan changes notified by 31 December, a verified emissions report by 31 March, surrender by 30 April, and improvement reports by 30 June (UK ETS Authority).
Scope has moved twice recently and is due to move again.
Domestic maritime came in on 1 July 2026 for ships at or above 5,000 gross tonnage, with the part-year 2026 obligation and the 2027 obligation both surrendered by 30 April 2028 (Authority response, 25 Nov 2025).
Energy from waste and waste incineration are in a monitoring, reporting and verification period only from 2026, with full inclusion intended from 2028 and a second Authority response still outstanding — so there is reporting to build now and no surrender cost yet (GOV.UK, updated 21 Apr 2026).
Free allocation is being withdrawn from the sectors UK CBAM will cover — cement, fertilisers, iron and steel, aluminium and hydrogen — on an indicative nine-year trajectory beginning in 2027, and aviation free allocation ended entirely on 1 January 2026 (Free Allocation Review, 26 Nov 2025).
The scheme was extended in December 2025 for a second ten-year phase running 1 January 2031 to 31 December 2040, though the cap trajectory for that phase has not been set (DESNZ, 4 Dec 2025).
Linkage with the EU ETS was agreed in principle at the UK–EU summit of 19 May 2025 and negotiations were launched in late 2025, but no agreement had been concluded as at August 2026 — which matters because linkage is what would unlock mutual exemption from the two CBAMs (TCA Partnership Council minutes).
A carbon price on imports, arriving 1 January 2027 for anyone over £50,000
The UK carbon border adjustment mechanism is the newest regime on this page and the one most likely to catch an organisation that has never thought of itself as an emitter.
It applies to goods imported into the UK on or after 1 January 2027 in five sectors — aluminium, cement, fertiliser, hydrogen, and iron and steel — and it is enacted, not proposed: Part 5 and Schedules 16–17 of the Finance Act 2026.
The liability is the embodied emissions of the goods multiplied by the CBAM rate, less relief for any carbon price already paid overseas, with the rate and the relief mechanics set by SI 2026/809.
The registration threshold is £50,000 of CBAM goods in a rolling twelve months, tested both backwards and forwards — so a single large order can pull an importer into the regime part-way through a year.
The emissions and verification regulations were still in draft as at August 2026, which means the detailed evidence a UK importer will have to obtain from an overseas supplier is not yet final (HMRC draft regulations).
The mirror-image problem already exists for UK exporters: the EU CBAM definitive regime started on 1 January 2026, with a 50-tonne annual de minimis, no certificate sales until February 2027, and the first declaration and surrender for 2026 imports due 30 September 2027 (European Commission).
For a UK manufacturer selling into Europe, that is a live evidence obligation today — the customer will ask for embedded-emissions data whether or not anything in UK law requires it.
Published, voluntary, and not mandatory for a single company yet
This is the regime the market talks about most and misstates most often.
DBT published UK SRS S1 and UK SRS S2 on 25 February 2026, endorsing IFRS S1 and S2 with UK amendments, and issued them for voluntary use by any entity — with no effective date clause in the standards themselves (DBT).
The FCA has proposed, in CP26/5, to make UK SRS S2 climate reporting mandatory for accounting periods beginning on or after 1 January 2027, with a one-year comply-or-explain relief for Scope 3 and a two-year relief for the wider S1 disclosures (FCA CP26/5).
On the FCA’s own analysis, around 600 listed companies are affected in total, of which 515 — those in UKLR categories 6, 16 and 22 — would be required to comply, while the 89 companies in UKLR 14 and 15 would instead make a transparency statement about their home-jurisdiction standard.
There is one live consequence of the standards existing, and it is easy to miss: the government confirmed UK SRS S2 is a national reporting framework for the purposes of s414CB(6) of the Companies Act, so a company reporting under UK SRS S2 does not have to duplicate its statutory climate disclosures (DBT government response, 25 Feb 2026).
There is also a trap in early adoption: a company that voluntarily applies the new requirements for a period beginning before 1 January 2027 cannot use the transitional reliefs, so moving early is all-or-nothing.
The rule that is actually in force while everyone watches the one that isn’t
The Task Force on Climate-related Financial Disclosures no longer exists.
The Financial Stability Board declared its work complete in July 2023 and transferred monitoring to the IFRS Foundation from 2024; the TCFD itself disbanded in October 2023 (IFRS Foundation).
Its recommendations survive inside other people’s rules, which is where they now bind — so treat fsb-tcfd.org as an archive and the IFRS Foundation as the live authority.
The UK rule that is actually in force is the Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022, made 17 January 2022 and applying to financial years commencing on or after 6 April 2022 (SI 2022/31).
They catch traded, banking and insurance companies and AIM companies with more than 500 employees, and other large companies with more than 500 employees and turnover over £500m, with parallel rules for LLPs under SI 2022/46.
They are not being repealed by UK SRS; they are being satisfied by it, for the companies that choose to report that way.
Whether private and “economically significant” companies will be required to use UK SRS is deferred to the Modernising Corporate Reporting consultation, which had not launched as at 6 August 2026.
The regime worth joining, not escaping
Every other regime on this page takes something from you.
A Climate Change Agreement gives something back: in exchange for meeting an energy-efficiency or emissions target, an eligible energy-intensive operator gets a discount on the Climate Change Levy it is already paying.
The current scheme started on 1 January 2026 and runs to 31 March 2033, with target periods TP7 (2026), TP8 (2027–28) and TP9 (2029–30), under SI 2025/813.
From 1 April 2026 the discounts are 92% on electricity, 89% on gas, 77% on LPG and 89% on other taxable commodities (DESNZ statutory guidance, Feb 2026).
Against CCL main rates of 0.801p/kWh on electricity and gas for 2026-27, that discount is the difference between a rounding error and a line item on a large site’s energy bill (HMRC, updated 27 Nov 2025).
Entry is through a sector association, which holds the umbrella agreement with the Environment Agency, and the window for new applicants runs 1 January to 31 August in each year to 2029.
Two things changed in the new scheme that matter operationally: targets are now set at facility level against a 2022 base year, with the old bubbling arrangements abolished, and the buy-out fee for TP7 is £37 per tonne CO2e, up from £25 (SI 2025/813 proportionate analysis).
The same “relief you have to apply for” logic runs through the British Industry Supercharger: eligible energy-intensive manufacturers get a 100% exemption from renewables and capacity-market levies, and the network-charging compensation rate rose from 60% to 90% from 1 April 2026 (DBT, 31 Oct 2025).
The property limb, and the milestone that was quietly dropped
If you let commercial property in England or Wales, minimum energy efficiency standards are a carbon regime whether or not you file a carbon report.
The minimum rating required to grant or continue a letting is EPC E.
A great deal of published advice still describes a trajectory to EPC C by 2027 and EPC B by 2030, and that trajectory no longer exists.
On 18 June 2026 DESNZ published an interim response confirming that the proposed 2027 EPC C milestone will not be taken forward, and that government instead intends EPC B from 2031 for privately rented non-domestic buildings over 1,000 m², where cost-effective, with buildings below that size staying at EPC E and no deadline set (DESNZ interim response).
That is a confirmed government intention rather than law — it takes effect only on the passage of secondary legislation, and a fuller response is still to come.
The practical consequence for a landlord is a change of plan rather than a reprieve: the size threshold means portfolio strategy now turns on floor area in a way it did not before, and a retrofit programme scoped against a 2027 date has four more years and a different target.
For most suppliers the trigger is not a statute — it is a lost tender
The most common reason a mid-sized UK business starts measuring carbon is that a customer asked for it.
In central government that request has a number: PPN 006, which requires bidders for contracts over £5 million a year to have published a Carbon Reduction Plan (Cabinet Office, 17 Feb 2025).
PPN 006 replaced PPN 06/21 for procurements commenced on or after 24 February 2025, when the Procurement Act 2023 came into force — so a supplier working from a plan template built against the old note is working from a superseded document.
The plan itself is prescriptive in a way the rest of this page is not: it must confirm a commitment to net zero by 2050, report all Scope 1 and Scope 2 emissions plus Scope 3 categories 4, 5, 6, 7 and 9, cover UK operations, be measured in tCO2e, be signed by a director and board approved, be published on the supplier’s own UK website and signposted from the homepage, and be refreshed within six months of financial year end (PPN 006 technical standard).
It binds central government departments, their executive agencies and non-departmental public bodies — not the whole public sector — but a great many local authorities and NHS bodies have adopted the same template voluntarily, which is why suppliers meet it far outside its formal scope.
The five named Scope 3 categories are the reason a procurement-driven inventory is usually wider than a SECR one, and the reason it is worth building both at once.
What it actually costs to get each one wrong
The penalties are wildly uneven, and the unevenness is the useful part.
Two regimes have real, published, enforced financial consequences; one has an unlimited theoretical fine that is essentially never used; one costs you a relief you applied for; and one costs you the contract.
That last bar is the honest answer to the question every buyer asks, and it is the opposite of what most pages on this subject imply.
It also explains the compliance rate: DESNZ’s independent evaluation, carried out by ICF and IFF Research and published in January 2026, concludes that actual SECR non-compliance is likely 14–23% — measured as the share of in-scope entities not disclosing both Scope 1 and at least one Scope 2 figure in their own accounts (SECR evaluation, Jan 2026).
A machine-read analysis of 19,800 matched companies in the same study put it higher, at 34% publishing none of the required figures, while the FRC’s deliberately non-representative 2024 review cycle found only minor issues in 10% of the accounts it looked at.
The reputational and commercial consequences are harder to price and easier to observe: a published enforcement notice, a failed pre-qualification, a lender or insurer questionnaire that cannot be answered.
Which of the nine actually apply to you
Nine ordinary facts about an organisation decide almost the whole question, and none of them is about your sector or your ambition.
Answer them and this will name the regimes that catch you, the ones that do not, and the first date each brings with it.
It reads the thresholds straight out of the instruments cited beside each result — it is a decision aid, not advice, and an organisation sitting near any line should take advice on its specific position.
Every deadline, dated against your own financial year
Carbon compliance is a calendar problem before it is a data problem.
Most of these dates are fixed in law regardless of your year end — ESOS and UK ETS do not care when your accounts close — but the disclosure regimes hang off your accounting period, and that is where organisations lose a year.
Set your financial year end and this lays the fixed statutory dates and your own derived ones on the same rail.
One inventory, built once, feeding six filings
This is the largest saving available on this subject, and it is almost never described on a consultancy page — because it argues for buying less.
The regimes ask different questions of the same underlying data: metered energy consumption, fuel purchases, fleet mileage, refrigerant losses, purchased electricity, and — for the wider ones — supplier spend and logistics.
Built once with a defensible organisational boundary and an auditable trail, that dataset serves SECR, the ESOS reference period, the CFD Regulations, a PPN 006 Carbon Reduction Plan, a CDP response and a voluntary UK SRS S2 disclosure without being recollected.
Built separately, by different teams against different boundaries, it produces figures that disagree with each other in the same annual report — which is the specific failure an assurance provider is most likely to raise.
The conversion factors are the other shared dependency, and they change every June, which is why a year-on-year comparison built before checking the current methodology note can be wrong without anyone having made an arithmetic error.
What a carbon compliance engagement actually contains
Stripped of proposal language, almost every engagement on this subject is the same six pieces of work in the same order.
Knowing the order matters because the price and the risk are concentrated in the first two, and most disputes are about the fifth.
Two stages are commonly assumed to be included and commonly are not: assurance itself — which the same firm often cannot provide without compromising independence — and the second-year run.
Get both written into the scope, or written explicitly out of it.
There is no licence to be a carbon consultant — so ask these nine things
Anyone in the UK may describe themselves as a carbon consultant.
There is no statutory register, no protected title and no regulator for the advice itself — the only formally registered role in the whole of this page is the ESOS lead assessor, who must sit on an approved register to sign an ESOS audit.
So the diligence falls to the buyer, and it is mostly a matter of asking nine questions and listening to the shape of the answer.
This instrument carries no score, deliberately: the answers are qualitative, they matter differently to different organisations, and a number here would be an invented fact dressed as a measurement.
What drives the price, and why nobody publishes a number
No official benchmark exists for the cost of carbon compliance advice, and any specific figure quoted online is an advisory estimate rather than a sourced fact.
This page does not publish one, because it could not cite one — and a confident number with no source behind it is exactly the thing that makes the rest of a page untrustworthy.
What can be said precisely is what moves the price, and these are in rough order of impact.
Two structural points are worth more than any benchmark.
First, get a written quote against your own specific requirements — a scope document listing sites, regimes, Scope 3 depth and assurance level makes bids comparable, and without one they are not.
Second, ask what the second year costs, because an engagement that does not get cheaper in year two has not transferred anything.
There is also a real case for not buying at all: a single-site company with good meter data, one regime and no assurance requirement can usually run its first SECR cycle in-house with the published guidance and the DESNZ factor set.
The same nine regimes land very differently by sector
Which regimes bite is decided by the facts in the checker; how hard they bite is decided by what the organisation does.
Manufacturing and industrial. The only sector routinely inside UK ETS, CCA and UK CBAM at once — process emissions, permitted installations, a CCL discount worth defending, and imported inputs in the five CBAM sectors. The compliance question here is usually a competitiveness question.
Financial services. Operational emissions are trivial and financed emissions are the whole subject, which makes this the sector where Scope 3 method choices dominate and where the CFD Regulations and any future transition-plan requirement matter most.
Real estate. MEES sits alongside SECR here, embodied carbon arrives through development, and the split between landlord and tenant control determines what is even measurable — which is why the June 2026 change to the EPC trajectory is a portfolio-planning event rather than a reporting one.
Logistics and transport. Fleet fuel is the dominant Scope 1 line, the PPN 006 Scope 3 categories 4 and 9 are core rather than peripheral, and the 2026 factor set changed the derived transport factors along with electricity.
Technology and professional services. Low direct emissions, high customer-questionnaire load — the practical driver is procurement and tender requirements rather than statute, and the work is data systems and supplier engagement rather than on-site abatement.
Public sector suppliers of any size. The trigger is contractual, arrives without warning, and has a published technical standard — which makes it the easiest of all of these to prepare for in advance.
The order that stops the first year being the expensive one
Whatever the checker returned, the sequence is the same, and getting it in this order is most of the saving.
First, fix the boundary. Decide which legal entities and which sites are in, write down why, and do not revisit it mid-cycle.
Second, date everything. Put the fixed statutory dates and your own accounting-period-derived ones on one calendar, and work backwards from the earliest.
Third, build the inventory once. Metered energy, Scope 1 and 2, then the five PPN 006 Scope 3 categories — in that order, because each is a superset of the last.
Fourth, check the reliefs. Climate Change Agreements, the British Industry Supercharger and the SECR low-energy exemption are all things you have to claim, and none of them arrives by itself.
Fifth, buy help only for the gap. Scope the engagement against the specific stages you cannot staff, not against the whole subject.
Sixth, treat everything dated after the FCA Policy Statement as planning, not obligation — and revisit it when the statement is published.
Nine regimes. One dataset. A handful of dates that are already fixed.
The rest of this page is the record — every figure above, with the source that established it.
Nobody is in all nine regimes — and the expensive mistake is never the one you knew about.
Find out which of the nine apply to you before you ask anyone for a price.
See what carbon compliance services coverOr book a free 15-minute conversation about where your organisation stands.
The regulatory imperative and business case
UK carbon compliance has evolved from voluntary reporting to mandatory disclosure, and in two of the nine regimes to a directly enforced financial consequence.
Organisations face a landscape of overlapping requirements: SECR for energy and carbon reporting, ESOS for energy audits, UK ETS for emissions trading, UK CBAM for imported goods from 1 January 2027, the CFD Regulations for climate-related financial disclosure, and — proposed rather than made — UK SRS disclosures for listed companies.
A carbon compliance consultancy engagement helps an organisation navigate that overlap while building systems that deliver value beyond the filing itself.
The cost of non-compliance extends beyond financial penalties.
Regulatory breaches damage stakeholder trust, limit access to green finance, and can exclude a supplier from public procurement, where a published Carbon Reduction Plan is a condition of bidding for central government contracts above £5 million a year.
Conversely, robust carbon compliance drives operational efficiency, reduces energy costs, and — through Climate Change Agreements and the British Industry Supercharger — can return money directly to an energy-intensive operator.
What a carbon compliance consultancy engagement typically covers
Compliance assessment and gap analysis
An engagement typically begins with an assessment of the organisation’s current position — existing carbon data, reporting systems and governance structures, measured against the regimes that actually apply.
That includes gap analysis for SECR, ESOS readiness and UK SRS preparation, identifying immediate compliance risks and prioritising remediation.
Strategic carbon planning
Beyond meeting minimum requirements, this stage develops frameworks aligned with business objectives — science-based targets validated by the SBTi, transition planning, and carbon reduction initiatives designed to contribute to long-term value creation rather than compliance alone.
The SBTi released version 2.0 of its Corporate Net-Zero Standard on 11 June 2026; targets can be submitted under it from 1 February 2027, and version 1.3.1 remains available for submissions until 31 January 2028.
Implementation and systems
Effective carbon compliance requires robust data systems and processes: carbon accounting platforms, data collection protocols and reporting dashboards, embedded into business-as-usual operations rather than treated as a one-off project.
For Scope 1, 2 and 3 footprinting specifically, see the specialist carbon consultancy at Carbon Legal.
Ongoing support and assurance
Carbon regulations evolve rapidly, so ongoing coverage typically includes monitoring of regulatory changes, periodic compliance reviews and annual reporting support — plus pre-assurance reviews to surface issues before external audit.
UK carbon law and compliance requirements
Current and upcoming carbon compliance requirements, with the status of each stated separately from its content.
How a carbon compliance consultancy engagement typically runs
Phase 1: Discovery and assessment. Stakeholder interviews, data review and a regulatory assessment mapping the organisation’s current state against every applicable regime, producing a compliance status report and a prioritised action plan.
Phase 2: Strategy development. Compliance roadmaps, carbon reduction strategies, governance frameworks, and an investment case for the systems and resources required.
Phase 3: Implementation. Data platform deployment, process design, staff training and pilot reporting cycles, with knowledge transfer built in so capability sits inside the organisation rather than with an outside adviser.
Phase 4: Optimisation and support. Ongoing refinement based on lessons learned, preparation for regulatory changes, and support through annual reporting cycles.
Sector-specific carbon compliance consulting
While carbon regulations apply broadly, implementation varies significantly by sector.
Manufacturing and industrial: complex Scope 1 emissions from processes, UK ETS participation, CCAs for energy-intensive operations, UK CBAM exposure on imported inputs from 2027, and supply chain decarbonisation challenges that have to be balanced against competitiveness.
Financial services: financed emissions under Scope 3, climate-related financial disclosure under the 2022 regulations, transition planning, and portfolio alignment with net zero, spanning both operational and financed emissions.
Real estate: MEES compliance at EPC E today with an intended EPC B from 2031 for non-domestic lettings over 1,000 m², embodied carbon in development, operational emissions across portfolios, and tenant engagement challenges that touch both asset value and investor expectations.
Technology and services: while often lower direct emitters, these sectors face Scope 3 complexity, customer reporting demands and sustainability-linked procurement requirements, which puts the focus on data systems and supply-chain engagement rather than on-site emissions.
Begin your carbon compliance journey
Effective carbon compliance requires early planning.
With ESOS Phase 4 qualification tested on 31 December 2026, UK CBAM starting on 1 January 2027 and UK SRS preparation live for listed companies, the organisations that start assessing their position now avoid the year-end scramble.
An initial compliance assessment — mapping regulatory obligations, current gaps and required actions — is the usual foundation for any carbon compliance consultancy engagement, whether delivered in-house or through an adviser.
No official benchmark exists for what that costs; get a written quote against your specific requirements rather than relying on a headline figure.
Next steps: for hands-on delivery, see the specialist carbon consultancy at Carbon Legal. For a no-obligation conversation about where your organisation stands, see our free 15-minute consultation.
Carbon compliance consultancy questions answered
What is carbon compliance consultancy?
Carbon compliance consultancy provides expert guidance on meeting carbon emissions law compliance requirements. This includes navigating regimes such as SECR, ESOS, UK ETS, UK CBAM from 2027 and the proposed UK SRS requirements, developing carbon reduction strategies, and implementing robust reporting systems. For specialist carbon law expertise, visit https://carbon.legal for comprehensive legal support.
Who needs carbon emissions law compliance consulting?
Any UK company meeting SECR thresholds — large companies and LLPs meeting at least 2 of 3: turnover of £36m or more, balance sheet of £18m or more, or 250 or more employees (Sch. 7 paras 20B–20C of SI 2008/410, as amended) — ESOS qualification criteria, or participating in UK ETS needs carbon compliance consulting. Any quoted company is in SECR scope with no size threshold at all. Importers of aluminium, cement, fertiliser, hydrogen or iron and steel above £50,000 a year come into UK CBAM from 1 January 2027. Listed companies in UKLR categories 6, 16 and 22 are preparing for UK SRS, which the FCA has proposed but not yet made mandatory.
What regulations does carbon compliance cover?
Carbon compliance covers SECR (Streamlined Energy and Carbon Reporting), ESOS (Energy Savings Opportunity Scheme), UK ETS (Emissions Trading Scheme), UK CBAM (the carbon border adjustment mechanism, from 1 January 2027), the Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022, Climate Change Agreements, MEES for let commercial property, PPN 006 Carbon Reduction Plans in public procurement, and the UK Sustainability Reporting Standards — published in February 2026 for voluntary use, and proposed by the FCA to become mandatory for certain listed companies for accounting periods beginning on or after 1 January 2027.
How much does carbon compliance consultancy cost?
No official benchmark exists, and any specific pound figure quoted online is an advisory estimate rather than a sourced fact. Cost varies by scope, company size, existing data maturity, the number of sites, the depth of Scope 3 required, the level of assurance sought, and whether work is done in-house or through advisers. Get a written quote against your specific requirements rather than relying on a headline number — see our qualitative breakdown of what drives carbon-compliance cost.
What is the difference between carbon compliance and net zero consulting?
Carbon compliance consultancy focuses on meeting mandatory regulatory requirements and avoiding penalties. Net zero consulting goes beyond compliance to develop science-based targets, decarbonisation roadmaps and transition strategies aligned with 1.5°C pathways. Most organisations need both compliance and strategic carbon consulting — see net zero consultancy for the strategic side.
Is UK SRS mandatory yet?
No. UK SRS S1 and S2 were published by DBT on 25 February 2026 for voluntary use by any entity, with no effective date in the standards themselves. The FCA consulted in CP26/5 on making UK SRS S2 mandatory for certain listed companies for accounting periods beginning on or after 1 January 2027, and aims to publish a Policy Statement in autumn 2026. That Policy Statement had not been published as at 6 August 2026, so every mandatory date currently in circulation is a proposal.
What is the penalty for not complying with SECR?
There is no SECR-specific penalty regime and no regulator that issues SECR fines. Non-compliance is dealt with through the general Companies Act 2006 directors’ report offence, which carries an unlimited fine on conviction on indictment but is not used for SECR in practice, and through FRC corporate reporting review, which can require correction or revision. DESNZ’s 2026 post-implementation review records that there is no dedicated civil sanction regime or proactive monitoring specific to SECR. This is the opposite of ESOS and UK ETS, both of which carry published civil penalties that the Environment Agency does issue.
Do I still have to do SECR if my company is now medium-sized?
Possibly yes. The general Companies Act size thresholds were uprated for financial years beginning on or after 6 April 2025, moving the large-company turnover boundary from £36m to £54m and the balance sheet from £18m to £27m. SECR’s own thresholds sit in a different schedule and were not uprated, so they remain £36m turnover, £18m balance sheet and 250 employees, two out of three. A company can therefore be medium-sized for accounts purposes and still be inside SECR.
Does UK CBAM apply to my business?
It applies if you import aluminium, cement, fertiliser, hydrogen or iron and steel goods into the UK on or after 1 January 2027 and the value of those goods exceeds £50,000 in any rolling twelve-month period, tested both backwards and forwards. UK-origin goods, scrap and non-commercial private imports are excluded. If you export those goods to the EU instead, the EU CBAM definitive regime has applied since 1 January 2026 and your customer will need embedded-emissions data from you.
Is the EPC C by 2027 deadline for commercial property still happening?
No. DESNZ confirmed on 18 June 2026 that the proposed interim EPC C milestone for 2027 will not be taken forward. The government instead intends to require EPC B from 2031 for privately rented non-domestic buildings over 1,000 m² in England and Wales, where cost-effective, subject to the passage of secondary legislation. Buildings below 1,000 m² remain at the EPC E minimum with no set deadline for going further.
Do I need a certified or accredited carbon consultant?
There is no statutory register, protected title or regulator for carbon consultancy in the UK, so no certification is legally required to give the advice. The one exception is ESOS: an ESOS energy audit must be signed off by a lead assessor who sits on an approved register. Beyond that, the relevant checks are practical — whether the adviser can name the instrument behind each threshold they cite, whether they will disclose any commercial interest in the remedies they recommend, and whether they will state the level of assurance their output is designed to support.
The terms that appear on every proposal
- Organisational boundary
- The decision about which legal entities and operations count as yours for reporting. Made once, documented, and the cause of most figures that disagree with each other.
- Scope 1, 2 and 3
- Direct emissions from sources you own or control; indirect emissions from the energy you buy; and everything else in your value chain, in fifteen defined categories.
- Intensity ratio
- Emissions divided by an activity metric — per employee, per £m revenue, per unit produced. SECR requires at least one, and does not say which.
- Conversion factor
- The published multiplier that turns an activity figure into tonnes of CO2e. Republished by DESNZ each June; the 2026 set changed methodology as well as values.
- Significant energy consumption
- The ESOS term for the at-least-95% of total consumption an audit must cover if the de minimis election is used. Not electing means auditing 100%.
- Limited and reasonable assurance
- Two levels of external opinion. Limited concludes nothing has come to the provider’s attention; reasonable is a positive opinion and requires a materially stronger evidence trail.
- Comply-or-explain
- A requirement to do the thing or publish why you have not. Under the FCA’s proposals it applies to Scope 3 for one year and to the wider UK SRS S1 disclosures for two.
- Free allocation
- UK ETS allowances issued without charge to installations at risk of carbon leakage. Being withdrawn from the CBAM sectors on a nine-year trajectory from 2027.
- Carbon Reduction Plan
- The specific published document required by PPN 006 for central government contracts above £5m a year — not a generic net zero strategy, and not interchangeable with one.
Every figure on this page, and where it came from
Named, dated, primary. Where a widely-cited source is out of date, that is stated rather than quietly dropped.
- The Companies (Directors’ Report) and Limited Liability Partnerships (Energy and Carbon Report) Regulations 2018 — legislation.gov.uk. The instrument that created SECR; in force 1 April 2019.
- SI 2008/410, Schedule 7, Part 7A — legislation.gov.uk. SECR thresholds for large unquoted companies and LLPs (paras 20A–20D), and the 40,000 kWh exemption.
- SI 2008/410, Schedule 7, Part 7 — legislation.gov.uk. Quoted companies’ global Scope 1 and 2 disclosure, with no size threshold.
- The Companies (Accounts and Reports) (Amendment and Transitional Provision) Regulations 2024 — legislation.gov.uk. The company-size uprating effective for financial years beginning on or after 6 April 2025, which did not change SECR.
- 2026 Post-Implementation Review of the SECR Regulations 2018 — DESNZ, 15 May 2026. Recommendation to retain SECR with amendments; the “no dedicated civil sanction regime” finding.
- Evaluation of the SECR Regulations — ICF and IFF Research for DESNZ, January 2026. The 14–23% non-compliance estimate, the 34% machine-read figure and the FRC 10% comparison.
- Companies Act 2006, s.415 — legislation.gov.uk. The directors’ report offence that is SECR’s only enforcement route.
- The Energy Savings Opportunity Scheme Regulations 2014 — legislation.gov.uk. The ESOS scheme, including the Part 8 penalty schedule.
- The Energy Savings Opportunity Scheme (Amendment) Regulations 2026 — legislation.gov.uk. Made 23 June 2026, in force 22 July 2026: removes DECs and Green Deal Assessments, adds the action plan review and the final progress update.
- The Energy Savings Opportunity Scheme (Amendment) Regulations 2023 — legislation.gov.uk. Reg. 13(b) raised significant energy consumption from 90% to 95% for Phase 3.
- Energy Savings Opportunity Scheme (ESOS) — Environment Agency guidance.
- ESOS post-implementation review — DESNZ, 18 July 2025. The 9,871 qualifying groups and 8,581 notifications.
- Enforcement and sanctions policy, Annex 2: climate change schemes — Environment Agency.
- Climate change civil penalties — Environment Agency register on data.gov.uk. Combined across schemes, held for a minimum of twelve months, with no per-scheme totals.
- UK Emissions Trading Scheme markets — GOV.UK.
- The Greenhouse Gas Emissions Trading Scheme Order 2020, art. 52 — legislation.gov.uk. The £100 per allowance excess emissions penalty and its CPI indexation.
- UK ETS for installations: how to comply — UK ETS Authority. The 31 March report and 30 April surrender dates.
- UK ETS scope expansion: domestic maritime — UK ETS Authority response, 25 November 2025.
- UK ETS Free Allocation Review — Authority response, 26 November 2025. Free allocation phase-out for CBAM sectors from 2027.
- MRV period for energy from waste and waste incineration — GOV.UK, updated 21 April 2026.
- Finance Act 2026, Part 5 — legislation.gov.uk. UK CBAM, applying to goods imported on or after 1 January 2027.
- Carbon Border Adjustment Mechanism policy summary — HMRC, updated 16 July 2026. Sectors, exclusions and the £50,000 registration threshold.
- The CBAM (Calculation of CBAM Rate and Determination of Carbon Price Relief) Regulations 2026 — legislation.gov.uk.
- EU CBAM definitive regime — European Commission. In force since 1 January 2026; first declaration 30 September 2027.
- The Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022 — legislation.gov.uk. In force 6 April 2022; the 500-employee and £500m tests.
- UK Sustainability Reporting Standards: UK SRS S1 and UK SRS S2 — Department for Business and Trade, 25 February 2026. Published for voluntary use.
- UK Sustainability Reporting Standards guidance — Department for Business and Trade.
- Government response to the UK SRS consultation — DBT, 25 February 2026. UK SRS S2 as a national reporting framework under s414CB(6).
- CP26/5: Aligning listed issuers’ sustainability disclosures with international standards — Financial Conduct Authority, published 30 January 2026, closed 20 March 2026. Policy Statement aimed for autumn 2026 and not published as at 6 August 2026.
- CP26/5, full text — FCA. Para 43 gives the 515 / 89 / ~600 company figures.
- Climate-related transition plan requirements — DESNZ consultation, closed 17 September 2025; no outcome published as at 6 August 2026.
- IFRS Foundation and the TCFD — the live authority since the TCFD disbanded in October 2023.
- Task Force on Climate-related Financial Disclosures — TCFD. Archive only: the TCFD disbanded in October 2023 and monitoring passed to the IFRS Foundation from 2024. Retained here because the recommendations remain the reference text.
- Climate Change Agreements statutory guidance 2026 — DESNZ. The scheme running 1 January 2026 to 31 March 2033, and the CCL discount rates.
- The Climate Change Agreements (Administration and Eligible Facilities) (Amendment) Regulations 2025 — legislation.gov.uk. Made 7 July 2025, in force 1 January 2026.
- Climate Change Agreements: guidance — GOV.UK. Superseded: last updated March 2022 and still states the scheme runs to 31 March 2025. Listed because it is the page most secondary sources still cite; use the 2026 statutory guidance instead.
- Climate Change Levy rates — HMRC, updated 27 November 2025. The 2026-27 main rates.
- Network Charging Compensation Scheme uplift for energy intensive industries — DBT, 31 October 2025. The 60% to 90% uplift from 1 April 2026.
- PPN 006: Taking account of Carbon Reduction Plans in the procurement of major government contracts — Cabinet Office, 17 February 2025. Supersedes PPN 06/21 for procurements from 24 February 2025.
- PPN 006 technical standard for Carbon Reduction Plans — Cabinet Office. Scope 3 categories 4, 5, 6, 7 and 9; director sign-off; annual refresh.
- Non-domestic MEES: interim response — DESNZ, 18 June 2026. EPC C 2027 dropped; EPC B from 2031 over 1,000 m² intended.
- Greenhouse gas reporting: conversion factors 2026 — DESNZ, published 11 June 2026.
- 2026 GHG conversion factors: major changes report — DESNZ. The −26% UK electricity CO2e change and its decomposition.
- Environmental Reporting Guidelines including SECR guidance — DESNZ / Defra. Last substantively updated 29 March 2019; there is no later edition.
- SBTi releases Corporate Net-Zero Standard v2.0 — Science Based Targets initiative, 11 June 2026. Submissions under v2.0 from 1 February 2027; v1.3.1 until 31 January 2028.
- Science Based Targets initiative — SBTi.
- TCA Partnership Council, fourth meeting minutes — GOV.UK, published 6 May 2026. Status of UK–EU ETS linkage negotiations.
Last verified 6 August 2026. This page is independent editorial published by srsreport.co.uk. It is a guide to how UK carbon compliance obligations fit together, not legal, financial or regulatory advice, and it does not create an adviser relationship. An organisation sitting near any threshold on this page should take advice on its specific position. Where a requirement is described as proposed, it is not law and may be changed, delayed or dropped before it is made.