FCA CP26/5 UK SRS Rules for Listed Companies — Implementation 2027
1The Financial Conduct Authority's Consultation Paper CP26/5, published on 30 January 2026, marks a pivotal shift in UK sustainability reporting by proposing to replace existing TCFD-aligned disclosure rules with mandatory UK Sustainability Reporting Standards (UK SRS) requirements for listed companies from 1 January 2027.
Key Dates & Requirements
Implementation Timeline
2The FCA's proposed timeline follows a structured approach designed to provide certainty while allowing adequate preparation time.
The consultation period runs from 30 January to 20 March 2026, giving stakeholders approximately 7 weeks to provide detailed feedback on the proposed rules.
1Following consultation closure, the FCA aims to publish a Policy Statement in autumn 2026, finalising the rules after reviewing stakeholder input.
This approach provides listed companies with approximately three months between rule finalisation and the 1 January 2027 implementation date.
2The new rules would apply to accounting periods beginning on or after 1 January 2027, meaning companies with December year-ends would first report under UK SRS for their 2027 annual reports, published in 2028.
5The FCA's timeline aligns with the Department for Business and Trade's publication of the finalised UK SRS on 25 February 2026, ensuring listed company requirements build on the confirmed standard framework.
Scope & Application
| Listing Category | UK SRS S1 | UK SRS S2 | Current TCFD | Implementation |
|---|---|---|---|---|
| Commercial (UKLR 6) | Comply/explain | Mandatory | Premium only | Jan 2027 |
| Secondary (UKLR 14) | Comply/explain | Mandatory | Not covered | Jan 2027 |
| Depositary receipts (UKLR 15) | Comply/explain | Mandatory | Not covered | Jan 2027 |
| Investment trusts | Tailored rules | Tailored rules | Not covered | Jan 2027 |
1The proposed UK SRS rules would apply to companies in specific listing categories: commercial companies (UKLR 6), secondary listing (UKLR 14), depositary receipts (UKLR 15), non-equity shares and non-voting equity shares (UKLR 16), and the transition category (UKLR 22).
3This scope covers the majority of UK-listed entities, representing a significant expansion from current TCFD requirements which apply to Premium Listed commercial companies with equity shares admitted to the Official List.
The broader application reflects the FCA's intention to align UK sustainability reporting with international best practice.
4Investment trusts and other specialist listing categories receive specific treatment within CP26/5, with the FCA proposing tailored requirements that reflect these entities' distinct business models and investor characteristics.
1Companies subject to the new rules would be required to include UK SRS-compliant sustainability disclosures in their annual reports, with specific location requirements to ensure accessibility for investors and other stakeholders.
Mandatory vs Comply or Explain Approaches
FCA CP26/5 Compliance Approaches
UK SRS S2 - Climate (Mandatory)
Climate-related disclosures apply on mandatory basis, with Scope 3 emissions as notable exception (comply or explain due to measurement challenges).
UK SRS S1 - General (Comply or Explain)
General sustainability disclosures on comply or explain basis, acknowledging developing methodologies while encouraging voluntary adoption.
International Alignment
Approach aligns UK with EU, Singapore, and Japan implementing mandatory climate disclosure requirements for listed companies.
1CP26/5 proposes a differentiated compliance approach, with climate-related disclosures under UK SRS S2 applying on a mandatory basis, while general sustainability disclosures under UK SRS S1 would apply on a "comply or explain" basis.
3Within the mandatory climate reporting category, Scope 3 emissions data represents a notable exception, continuing to apply on a "comply or explain" basis due to the measurement and verification challenges identified during the consultation process.
The FCA's rationale for mandatory climate reporting reflects both regulatory convergence with international standards and recognition of climate risk as a material financial risk requiring consistent disclosure.
2This approach aligns the UK with jurisdictions including the EU, Singapore, and Japan that are implementing mandatory climate disclosure requirements.
4For UK SRS S1 general sustainability disclosures, the "comply or explain" approach acknowledges the developing nature of sustainability reporting methodologies while encouraging voluntary adoption ahead of potential future mandatory requirements.
Transitional Relief Provisions
| Relief Category | Deferral Period | New Deadline | Requirements |
|---|---|---|---|
| Scope 3 emissions | 1 year | 1 January 2028 | Explain deferral reasoning |
| UK SRS S1 (general) | Up to 2 years | 1 January 2029 | Preparation timeline disclosure |
1The FCA proposes two categories of transitional relief to support implementation: a 1-year deferral for Scope 3 emissions reporting (until accounting periods beginning on or after 1 January 2028) and up to 2-year deferral for non-climate disclosures under UK SRS S1 (until accounting periods beginning on or after 1 January 2029).
3The Scope 3 relief reflects continued industry concerns about data availability, methodological consistency, and third-party verification challenges in supply chain emissions measurement.
Companies utilising this relief would be required to explain their deferral reasoning and implementation timeline.
2The extended relief period for UK SRS S1 general sustainability disclosures acknowledges the broader scope of these requirements, covering areas including biodiversity, water, waste, and social factors where reporting frameworks continue to develop.
1Companies claiming transitional relief must provide clear explanations of their preparation progress and expected compliance timelines, ensuring transparency about their sustainability reporting development.
Transition from TCFD to UK SRS
TCFD to UK SRS Transition
Enhanced Requirements
Expanded quantitative disclosure requirements, enhanced scenario analysis, and more detailed transition planning compared to existing UK TCFD interpretations.
Global Framework
UK listed companies report using same foundational framework as counterparts in Australia, Japan, Singapore, and other adopting jurisdictions.
Implementation Support
Updated FCA guidance, industry roundtables, and coordination with professional bodies to ensure smooth transition from TCFD to UK SRS.
3CP26/5 represents a fundamental shift from the current TCFD-aligned framework to internationally aligned sustainability reporting standards.
This transition moves the UK from a jurisdictional interpretation of climate disclosure requirements to participation in a global framework covering approximately 40% of global capital markets.
5The transition builds on the Department for Business and Trade's adoption of IFRS Sustainability Disclosure Standards as the basis for UK SRS, ensuring UK listed companies report using the same foundational framework as counterparts in Australia, Japan, Singapore, and other adopting jurisdictions.
4For companies currently reporting under TCFD, the transition involves enhanced quantitative disclosure requirements, expanded scenario analysis, and more detailed transition planning disclosures compared to existing UK TCFD interpretations.
1The FCA emphasises that while the standards framework changes, the underlying focus on climate-related financial risks and opportunities remains consistent with current TCFD principles, providing continuity for preparers and users.
2Implementation support will be provided through updated FCA guidance, industry roundtables, and coordination with professional bodies to ensure smooth transition from current TCFD reporting to UK SRS compliance.
Which listed companies must comply with FCA UK SRS rules?
The proposed rules apply to companies in these listing categories: commercial companies (UKLR 6), secondary listing (UKLR 14), depositary receipts (UKLR 15), non-equity shares and non-voting equity shares (UKLR 16), and the transition category (UKLR 22). Investment trusts and other specialist categories have specific requirements detailed in CP26/5.
What is mandatory versus "comply or explain" under FCA CP26/5?
Climate-related disclosures under UK SRS S2 are proposed to be mandatory. General sustainability disclosures under UK SRS S1 would apply on a "comply or explain" basis. Scope 3 emissions reporting remains "comply or explain" even within the climate reporting requirements.
What transitional relief is available for UK SRS implementation?
Two types of relief are proposed: Scope 3 emissions have a 1-year deferral available (reporting required from accounting periods beginning on or after 1 January 2028). Non-climate disclosures (UK SRS S1) have up to 2-year deferral available (reporting required from accounting periods beginning on or after 1 January 2029).
How does UK SRS replace current TCFD requirements?
CP26/5 proposes replacing existing TCFD-aligned disclosure rules with UK SRS requirements from 1 January 2027. This represents a shift from UK-specific TCFD interpretations to internationally aligned sustainability reporting standards, making the UK part of a global framework covering approximately 40% of global capital markets.
When will FCA finalise the UK SRS rules for listed companies?
The FCA aims to publish a Policy Statement in autumn 2026, finalising the rules after reviewing consultation feedback. The consultation closes on 20 March 2026. Companies will then have approximately three months to prepare for implementation from 1 January 2027.