ESG reporting requirements in the UK: the full map
There is no single UK ESG report — there is a patchwork of seven regimes with different scopes, regulators and deadlines, now converging slowly on UK SRS. This page maps every obligation that applies in 2026, who it catches, and where the landscape moves next.
Seven regimes, one table
Asking “what are the UK’s ESG reporting requirements?” gets seven different answers depending on what a company is, how big it is, and who regulates it. The table below is our running map of every regime with disclosure force in June 2026. The detail pages linked throughout this hub take each one apart.
| Regime | Who it catches | What it requires | Status |
|---|---|---|---|
| UK SRS S1 & S2 | Voluntary — any entity | Full sustainability & climate disclosure (ISSB-based) | Published 25 Feb 2026; FCA mandation proposed for listed companies from FY2027 [1][2] |
| FCA Listing Rules (TCFD-aligned) | UK-listed commercial companies | TCFD-aligned climate disclosure, comply-or-explain | In force since 2021; proposed to move to UK SRS basis [2] |
| Companies Act CFD Regulations | UK companies >500 employees & >£500m turnover (incl. large private) | Climate-related financial disclosure in the strategic report | In force since April 2022 [5] |
| SECR | Quoted companies; large unquoted companies & LLPs (2 of: £36m/£18m/250) | Annual energy use, Scope 1–2 emissions, intensity ratio | In force; 2026 post-implementation review published [3] |
| ESOS | Large undertakings (250+ employees or >€50m/>€43m) | Four-yearly energy audits + action-plan progress | Phase 4: qualification 31 Dec 2026, deadline 5 Dec 2027 [4] |
| FCA SDR & investment labels | FCA-authorised firms; asset managers | Anti-greenwashing rule; product labels; entity disclosures | Anti-greenwashing in force since 31 May 2024 [6] |
| Strategic report / s172 | All but small companies | Narrative on stakeholders, environment, employees | In force (Companies Act 2006) [8] |
How to read the patchwork
The centre of gravity has moved to UK SRS
Until February 2026, UK ESG disclosure had no unifying standard — TCFD supplied the architecture, but each regime implemented it differently. The publication of UK SRS S1 and S2[1] changed the structure of the problem: there is now a national baseline that the FCA proposes to hard-wire for listed companies[2], that the SECR review implicitly benchmarks against[3], and that the government’s corporate-reporting reform programme treats as the destination. Compliance planning that still treats each regime as standalone is planning for the previous decade.
Scope tests don’t line up — by design history, not logic
SECR tests sterling thresholds from 2018[3]; ESOS tests euro thresholds from 2014[4]; the Companies Act climate rules test 500 employees and £500m turnover[5]; the proposed UK SRS extension would test “economic significance”, definition pending[1]. A mid-cap group can be inside three regimes and outside two without any of it tracking a coherent principle. Until consolidation happens, scope must be checked regime by regime, every year — particularly after the April 2025 Companies Act size uplift, which moved accounts classifications without moving SECR or ESOS scope.
Narrative risk now outweighs data risk for financial firms
The FCA’s anti-greenwashing rule[6] inverted the usual compliance posture: the danger is no longer failing to disclose, but disclosing more than the evidence supports. Combined with transition-plan expectations built on the TPT framework[7], the practical effect is that sustainability claims across marketing, product documents and annual reports need the same evidential discipline as financial statements.
ESG & carbon disclosure analysis on SRS Report
UK ESG requirements — frequently asked questions
Is ESG reporting mandatory in the UK in 2026?
Parts of it are. There is no single “ESG report” obligation; instead, UK companies face a patchwork: SECR energy and carbon disclosures, TCFD-aligned climate disclosure for large companies and listed issuers, ESOS energy audits, strategic-report narrative requirements, and FCA sustainability rules for financial firms. UK SRS — published February 2026 — is voluntary today, with mandatory listed-company reporting proposed from FY2027.
Which UK companies must report under TCFD-aligned rules?
Two parallel regimes: FCA Listing Rules require TCFD-aligned disclosure from UK-listed commercial companies (since 2021), and the Companies Act Climate-related Financial Disclosure regulations require it from UK companies with over 500 employees and £500m turnover, including large private companies, since April 2022. The FCA has proposed moving its listed-company regime onto UK SRS from 2027.
What is the FCA anti-greenwashing rule?
Since 31 May 2024, all FCA-authorised firms must ensure any sustainability claims about products and services are fair, clear and not misleading, and supported by evidence. It sits alongside the SDR investment-labelling regime for asset managers.
Do private companies have ESG reporting obligations in the UK?
Yes, if they are large. SECR catches large unquoted companies and LLPs; ESOS catches large undertakings regardless of listing; the Companies Act climate disclosure rules catch private companies above 500 employees and £500m turnover; and the strategic report applies to all but small companies. The proposed extension of UK SRS to “economically significant companies” would deepen this further.
Will UK ESG requirements converge?
That is the stated direction. UK SRS is designed as the unifying baseline, the FCA proposes to move listed companies onto it, the government is reviewing SECR, and a Modernising Corporate Reporting programme is examining the Companies Act framework. But convergence is a multi-year project — for now, companies must comply with the patchwork as it stands.
- UK Sustainability Reporting Standards (UK SRS S1 and S2) — Department for Business and Trade, GOV.UK · Published 25 February 2026; voluntary use
- CP26/5: sustainability reporting requirements for listed companies — Financial Conduct Authority · Closed 20 March 2026; Policy Statement expected autumn 2026
- The Companies (Directors’ Report) and LLPs (Energy and Carbon Report) Regulations 2018 — legislation.gov.uk
- Comply with the Energy Savings Opportunity Scheme (ESOS) — Environment Agency, GOV.UK
- The Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022 — legislation.gov.uk · TCFD-aligned disclosure for large companies since April 2022
- PS23/16: Sustainability Disclosure Requirements (SDR) and investment labels — Financial Conduct Authority · Anti-greenwashing rule in force since 31 May 2024
- Transition Plan Taskforce Disclosure Framework — Transition Plan Taskforce / IFRS Foundation · TPT materials transferred to IFRS Foundation, 2024
- Companies Act 2006 — strategic report and s172(1) statement requirements — legislation.gov.uk