TCFD → UK SRS S2 — the migration story
The Task Force on Climate-related Financial Disclosures shaped a decade of corporate climate reporting before being succeeded by UK SRS S2. What changed, what carried over, and what the FCA’s transition from TCFD-aligned rules means for UK listed companies preparing for 1 January 2027.
What replaced TCFD
UK SRS S2 inherits the architecture and tightens almost every requirement. For UK listed companies, the migration is mechanical — same four pillars, same 11 disclosures, more depth.
UK SRS S2: The New Standard
The Task Force on Climate-related Financial Disclosures (TCFD) was the global framework that shaped corporate climate reporting from 2015 onwards.
It was formally disbanded in 2023 and its work transferred to the International Sustainability Standards Board (ISSB).
UK SRS S2 — built on the ISSB's IFRS S2 — is its successor.
For UK listed companies, the FCA has proposed replacing its existing TCFD-aligned listing rules with mandatory UK SRS S2 reporting from 2027.
The framework that shaped a decade of climate reporting
From 2015 to 2023, TCFD was the voluntary baseline that every climate-reporting standard converged on. The four-pillar architecture is its lasting legacy.
What TCFD was
The TCFD was created by the Financial Stability Board in 2015 to give companies a consistent way to disclose climate-related risks and opportunities to investors 36. Its lasting contribution is a four-pillar structure — governance, strategy, risk management, and metrics and targets — that nearly every climate-reporting framework now uses 36. In the UK it underpinned the climate-disclosure rules the FCA applied to listed companies, and similar requirements under the Companies Act 22.
ISSB takeover — the TCFD’s culmination
By 2023 the framework was so widely adopted that the FSB judged its job done. IFRS S2 absorbed the recommendations; the IFRS Foundation took over monitoring.
Why it ended
Having established a global baseline, the TCFD's job was effectively done: in 2023 it was disbanded and its monitoring responsibilities passed to the ISSB 12. The ISSB's IFRS S2 fully incorporates the TCFD's four-pillar structure, so the framework lives on inside the new standards rather than disappearing 36. This is why companies already reporting under TCFD find the move to UK SRS S2 an evolution rather than a fresh start 37.
What CP26/5 means for in-scope issuers
The FCA proposes to delete the TCFD-aligned Listing Rules and replace them with mandatory UK SRS S2 from 1 January 2027 — an evolution, not a fresh start.
What it means for listed companies
The FCA's CP26/5 proposes to delete its TCFD-aligned climate-disclosure rules and replace them with rules requiring in-scope listed companies to report against UK SRS S2, on a mandatory basis, for accounting periods beginning on or after 1 January 2027 22. Because so much TCFD architecture carries over, the FCA judged climate disclosure mature enough to mandate — while treating the genuinely new elements, like Scope 3 and wider sustainability, more cautiously 226. *(For a practical TCFD-to-UK-SRS migration checklist, see the dedicated guide on srsreport.co.uk.)*
TCFD → UK SRS — frequently asked
Is TCFD still required, what replaced it, the four pillars, how UK SRS S2 differs, and when the FCA rules change.
Is TCFD still required?
TCFD was formally disbanded in 2023 and its work transferred to the ISSB.
The FCA proposes to delete existing TCFD-aligned listing rules and replace them with mandatory UK SRS S2 requirements from 2027.
So TCFD itself is no longer required, but its successor — UK SRS S2 — will be.
What replaced TCFD?
UK SRS S2 replaced TCFD for UK listed companies.
UK SRS S2 is built on the ISSB's IFRS S2, which fully incorporates TCFD's four-pillar structure but with enhanced requirements including financially quantified scenario analysis and full Scope 3 emissions.
What are the TCFD four pillars?
The TCFD four pillars are governance, strategy, risk management, and metrics and targets.
This structure was TCFD's lasting contribution and is now used by nearly every climate-reporting framework including UK SRS S2, IFRS S2, and the EU's ESRS.
How is UK SRS S2 different from TCFD?
UK SRS S2 keeps TCFD's four pillars but requires much more: financially quantified scenario analysis rather than narrative description, full Scope 3 value-chain emissions, and explicit connection between climate disclosures and financial statements.
It turns principles into detailed reporting standards.
When do the new FCA rules start?
The FCA proposes mandatory UK SRS S2 for in-scope listed companies for accounting periods beginning on or after 1 January 2027, subject to Policy Statement confirmation expected autumn 2026.
This replaces the existing TCFD-aligned climate disclosure rules.
Continue across the TCFD guide set
Five dedicated TCFD pages plus this migration story cover the full picture — from definitional pillar to UK applicability to the UK SRS S2 transition.
TCFD — the UK guide
Cluster anchor: history, four pillars, UK applicability and the path to UK SRS S2.
RequirementsTCFD reporting requirements
Who must report, where, and when — the legal framework around TCFD in the UK.
FrameworkTCFD framework — 4 pillars + 11 disclosures
Detailed breakdown with mapping to IFRS S2 and UK SRS S2.
PracticalTCFD disclosures — practical drafting guide
How to draft each of the 11 disclosures with examples and pitfalls.
UK-specificTCFD UK requirements
FCA Listing Rules, SI 2022/31, threshold tests and the UK SRS S2 transition.
SuccessorUK SRS S1 and S2
The UK adoption of IFRS S1 and S2 that will replace the TCFD-aligned regime for listed companies.
Related guides & references
UK SRS S2: Climate-Related Disclosures
Comprehensive coverage of UK SRS S2 climate reporting requirements that succeed TCFD.
FCA Authority & CP26/5
FCA regulatory framework proposing to replace TCFD rules with UK SRS — mandatory application proposed from 1 January 2027 under CP26/5.
TCFD to UK SRS Migration (srsreport.co.uk)
Practical step-by-step checklist for transitioning from TCFD to UK SRS S2 reporting.
Global Sustainability Standards
How UK SRS fits within the global ISSB framework and international standards landscape.