[UK] New sustainability reporting standards land, CFOs prep for 2027
The UK government published final UK Sustainability Reporting Standards (UK SRS S1 and S2) on 25 February 2026, setting the framework for mandatory climate and sustainability disclosures from 1 January 2027. The standards replace the Streamlined Energy and Carbon Reporting (SECR) regime and build on ISSB's IFRS S1 and S2, issued in June 2023.
What changed: UK SRS S1 covers general sustainability-related risks and opportunities. UK SRS S2 focuses on climate-related disclosures. Both use single financial materiality (unlike the EU's double materiality under CSRD). They're voluntary for now. The FCA's consultation (CP26/5), closing 20 March 2026, proposes 'comply or explain' for listed issuers from 2027, with policy statement due autumn 2026.
The timeline: Phased rollout starts with climate disclosures in Year 1. Scope 3 emissions kick in from Year 2. Notably, the UK removed the ISSB's one-year Scope 3 delay, so entities report with financials from day one. CIMA and ICAEW backed the standards for driving investor confidence and integration into risk planning. Assurance follows via ISSA(UK) 5000, effective for periods from December 2026.
The context: UK low-carbon and clean energy sectors hit record £77 billion revenues in 2024, per government data, reinforcing the case for disclosure. Transitional reliefs ease the burden (climate-first, then broader sustainability), but CFOs face tight prep windows post-2025 consultations. Early voluntary adoption is pitched as a strategic edge, not just compliance box-ticking.
What matters: The standards are interoperable with European Sustainability Reporting Standards, creating a coherent global baseline. For UK CFOs, this means aligning internal reporting, prepping for external audit, and navigating proportionality rules for smaller listed entities. The FCA's final rules land by year-end 2026. Start mapping now.
Sources: UK government guidance published 25 February 2026. CIMA news release. FCA CP26/5 consultation (closes 20 March 2026).