UK Sustainability Reporting Standards — UK SRS S1 & S2
The UK's sustainability disclosure framework, published by the Department for Business and Trade on 25 February 2026 for voluntary use. Based on IFRS S1 and S2; the FCA proposes mandatory climate reporting for ~515 listed companies for financial years starting on or after 1 January 2027.
UK SRS S1 and S2 published 25 February 2026. Mandatory for premium-listed entities with financial years starting on or after 1 January 2027, subject to FCA rules. See all key dates
Start here
All UK SRS guides →UK SRS S1 — General Requirements for sustainability disclosure
The cross-cutting standard covering governance, strategy, risk management and metrics for all sustainability topics.
UK SRS S2 — Climate-related disclosure requirements
Scenario analysis, transition plans, physical and transition risk disclosures, Scope 1, 2 and 3 emissions.
UK SRS compliance — FCA obligations and what to prepare
FCA DTR requirements, comply-or-explain provisions, attestation obligations and enforcement.
UK SRS deadlines — mandatory dates and the FCA implementation timetable
From February 2026 publication through to the first mandatory reporting period and beyond.
Most read
What is UK SRS?
The UK Sustainability Reporting Standards (UK SRS) are the UK's framework for sustainability-related financial disclosures. Published by the Department for Business and Trade on 25 February 2026 for voluntary use, they comprise two standards: UK SRS S1 (General Requirements) and UK SRS S2 (Climate-related Disclosures) — both available on the GOV.UK publication page.
UK SRS is based closely on the ISSB's IFRS S1 and IFRS S2, with six UK-specific amendments. The FCA proposes, through CP26/5, to make UK SRS S2 climate reporting mandatory for in-scope listed companies for financial years commencing on or after 1 January 2027, with a Policy Statement expected in autumn 2026.
Approximately 515 UK-listed entities would be in scope for the first mandatory reporting period under the FCA proposal. Large private companies are not yet in scope — the Government is expected to consult on them through the Modernising Corporate Reporting programme, and the FRC's sustainability reporting FAQ tracks assurance and oversight developments.
Key timeline
Full timeline →- Feb 2026UK SRS S1 and S2 published The Department for Business and Trade published UK SRS S1 and UK SRS S2 on 25 February 2026 for voluntary use, based on IFRS S1 and S2 with six UK-specific amendments.
- Autumn 2026FCA Policy Statement expected The FCA's CP26/5 consultation closed 20 March 2026; the Policy Statement confirming the final Listing Rule requirements is expected in autumn 2026.
- Jan 2027Proposed mandatory start for listed companies UK SRS S2 climate reporting proposed for ~515 in-scope listed companies for financial years commencing on or after 1 January 2027, with first reports appearing in 2028.
- 2028 +Reliefs unwind; possible extension to large private companies Scope 3 comply-or-explain relief ends (effectively 2028) and wider S1 topics follow (effectively 2029). The Government is expected to consult on private companies through the Modernising Corporate Reporting programme.
Explore UK SRS
UK SRS — frequently asked questions
What is UK SRS?
UK SRS — the UK Sustainability Reporting Standards — is the UK's framework for sustainability-related financial disclosure.
It comprises two standards: UK SRS S1 (general sustainability-related disclosures) and UK SRS S2 (climate-related disclosures).
The Department for Business and Trade published both on 25 February 2026 for voluntary use, based on the ISSB's IFRS S1 and S2 with six UK-specific amendments.
Is UK SRS mandatory?
Not yet.
UK SRS is voluntary today.
The FCA is consulting through CP26/5 (published 30 January 2026, closed 20 March 2026) on making UK SRS S2 climate disclosures mandatory for in-scope listed companies, with a Policy Statement expected in autumn 2026 and rules proposed in force for accounting periods beginning on or after 1 January 2027.
Who does UK SRS apply to?
Under the FCA's CP26/5 proposal, approximately 515 UK-listed companies across five UK Listing Rule categories would be required to report.
Scope is set by listing category, not company size.
Large private companies are not yet in scope — the Government is expected to consult on them through the Modernising Corporate Reporting programme.
When does UK SRS reporting start?
Companies can adopt UK SRS voluntarily now.
Under the FCA proposal, mandatory UK SRS S2 climate reporting would apply for accounting periods beginning on or after 1 January 2027, meaning the first mandatory reports appear in 2028 annual reports.
Scope 3 emissions carry a one-year comply-or-explain relief (effectively 2028) and wider UK SRS S1 topics a two-year relief (effectively 2029).
What is the difference between UK SRS S1 and S2?
UK SRS S1 sets the general requirements for disclosing all material sustainability-related risks and opportunities — governance, strategy, risk management, and metrics and targets.
UK SRS S2 applies that architecture to climate specifically, adding GHG emissions across Scope 1, 2 and 3, climate scenario analysis and transition plan disclosure.
How does UK SRS relate to SECR and ESOS?
They are separate regimes that continue alongside UK SRS.
SECR is a statutory Companies Act energy and carbon reporting requirement — DBT confirmed in a January 2026 letter to the FCA that it continues as a separate annual obligation.
ESOS is a four-yearly energy audit scheme run by the Environment Agency.
Data gathered for SECR and ESOS feeds directly into UK SRS S2 Scope 1 and 2 climate disclosures.
Related regimes
SECR
Streamlined Energy and Carbon Reporting — Scope 1 and 2 data from SECR feeds directly into UK SRS S2 climate disclosures.
ESOS
Energy Savings Opportunity Scheme — ESOS energy-audit data maps into UK SRS S2 Scope 1 and 2 emissions disclosures.
TCFD
The four-pillar framework — governance, strategy, risk management, metrics and targets — that UK SRS S2 is built on.
IFRS S1 & S2
UK SRS S1 and S2 are based closely on IFRS S1 and S2 issued by the ISSB. See the UK-specific modifications and what changed.