Sustainability reporting for UK manufacturers: which regimes bite, and in what order

It turns on size, listing, energy use and what the business imports and packs, not on manufacturing as such. SECR applies to quoted companies and to unquoted companies that exceed at least two of £36m turnover, £18m balance sheet and 250 employees. ESOS applies to UK groups containing a large undertaking. Installations running combustion units above 20 MW, and other listed industrial activities, need a UK ETS permit. Importers of aluminium, cement, fertiliser, hydrogen, or iron and steel goods face UK CBAM from 1 January 2027. Packaging producers above the turnover and tonnage tests have packaging EPR duties. Listed manufacturers report against UK SRS on a comply-or-explain basis.

Not directly, because they are different duties. ESOS requires an energy audit, or ISO 50001 certification, covering at least 95% of total energy consumption every four years, with a notification to the Environment Agency. SECR requires an annual disclosure of energy use, emissions, at least one emissions intensity ratio and any efficiency measures taken, in the directors' report. The same metered energy data can feed both, and ESOS audit findings often supply the efficiency measures SECR asks companies to describe.

The qualification date is 31 December 2026 and the compliance date, by which the notification of compliance must be submitted, is 5 December 2027. The action plan is then due by 5 December 2028, with progress updates due on 5 December 2029, 2030 and 2031.

The UK Emissions Trading Scheme is a cap-and-trade scheme. A site is covered if it carries out an activity listed in Schedule 2 of the Greenhouse Gas Emissions Trading Scheme Order 2020, including combustion of fuels where combustion units with a total rated thermal input exceeding 20 megawatts are operated. A covered operator needs a permit, submits a verified emissions report by 31 March and surrenders allowances by 30 April each year.

It applies to importers, not to UK production. From 1 January 2027 a person importing aluminium, cement, fertiliser, hydrogen, or iron and steel goods in the course of business must register once imports reach £50,000 or more in 12 months, or are expected to within 30 days. For anyone triggering registration in 2027, registration is due by 31 January 2028, and the first return and payment by 31 May 2028.

SECR requires at least one ratio that expresses the company's annual emissions in relation to a quantifiable factor associated with its activities. It does not prescribe the factor. Emissions per tonne of product tracks operational efficiency, while revenue-based ratios move with prices. The ratio is an emissions ratio; SECR contains no statutory energy-intensity ratio.

Not under SECR for quoted companies, and only transport fuel for unquoted companies and LLPs. Listed manufacturers report Scope 3 under UK SRS S2 or explain why not, after a one-year relief for the first period beginning on or after 1 January 2027. Customers, lenders and public-sector buyers may ask for it regardless.

None is required by law. ISO 14001 is the voluntary environmental management system standard; its fourth edition, ISO 14001:2026, was published on 15 April 2026, and UKAS says certification bodies stop new certifications to the 2015 edition on 31 October 2027. ISO 50001 is the energy management standard and is one of the two ESOS Phase 4 compliance routes.