UK SRS: What UK CFOs Must Do Before the FCA Mandates Reporting

The Department for Business and Trade published UK SRS S1 and S2 in February 2026 — UK CFOs who are not yet preparing for mandatory disclosure are already behind the regulatory curve.

On 25 February 2026, the UK government published the final UK Sustainability Reporting Standards: UK SRS S1 (General Requirements for Disclosure of Sustainability-related Financial Information) and UK SRS S2 (Climate-related Disclosures). Both standards are based on the ISSB’s IFRS S1 and S2 frameworks, adapted for UK-specific regulatory context. The standards are currently available for voluntary use — but the FCA is already consulting on proposals to require listed companies to report against UK SRS from 1 January 2027. For UK CFOs, the window to build reporting infrastructure before mandatory requirements arrive is measured in months, not years.

What Do UK SRS S1 and S2 Actually Require CFOs to Disclose?

UK SRS S1 establishes the general framework for sustainability-related financial disclosures. It requires entities to report on sustainability-related risks and opportunities that could reasonably be expected to affect cash flows, access to finance, or cost of capital over the short, medium, and long term. UK SRS S2 provides the climate-specific requirements, including governance, strategy, risk management, and metrics — with Scope 1, 2, and eventually Scope 3 greenhouse gas emissions reporting.

For CFOs, the critical framing is financial materiality. Unlike earlier ESG frameworks focused on stakeholder impact, UK SRS S1 and S2 require disclosure based on what is material to investors’ assessments of enterprise value. This shifts the sustainability reporting function squarely into the CFO’s remit, alongside external auditors and the Audit Committee. Boards and Audit Committees will need to approve the materiality assessment process and the resulting disclosures — making CFO preparation critical to board governance readiness. Access INFORMD’s sustainability reporting briefings for further context on board-level obligations.

• Commission a materiality assessment under UK SRS S1 now — mapping which sustainability-related risks and opportunities affect your cash flows, financing, and cost of capital.
• Assign the UK SRS reporting function to a named CFO-level owner with cross-functional access to risk, legal, operations, and investor relations.
• Brief the Audit Committee on UK SRS scope, timeline, and assurance implications before the end of Q3 2026.

Executive Action: complete materiality scoping before the FCA publishes final mandatory rules.

How Does UK SRS Differ from TCFD and ISSB Standards CFOs Already Know?

Many UK listed companies have already adopted Task Force on Climate-related Financial Disclosures (TCFD) recommendations, which have been mandatory for premium-listed companies since 2021 under FCA Listing Rules. UK SRS S2 builds directly on TCFD’s four-pillar structure — governance, strategy, risk management, and metrics and targets — but introduces more granular requirements around climate-related scenario analysis, transition planning, and quantitative financial impact disclosure.

UK SRS S1 goes further by requiring disclosure on sustainability topics beyond climate — though the FCA’s initial mandatory proposal focuses on UK SRS S2 climate disclosures first, with UK SRS S1 applying on a “comply or explain” basis. Scope 3 GHG emissions reporting carries transitional relief. CFOs who have built TCFD infrastructure are ahead, but the UK SRS requirements on financial quantification and scenario analysis represent a material uplift. According to a 2026 FTI Consulting survey, 63% of UK CFOs identify finance transformation as a strategic priority, with sustainability reporting cited as a key driver of that transformation.

• Conduct a gap analysis between your current TCFD disclosures and UK SRS S2 requirements — focusing on climate scenario analysis methodology and financial impact quantification.
• Determine whether the Scope 3 transitional relief applies to your reporting entity and document the rationale for any deferral.
• Review your existing ESG data infrastructure against UK SRS data requirements — particularly Scope 2 location-based versus market-based emissions distinctions.

Executive Action: complete the TCFD-to-UK SRS gap analysis by end of Q3 2026.

What Is the FCA’s Mandatory Reporting Timeline and What Does It Mean for CFO Planning?

The FCA is currently consulting on proposals that would make UK SRS reporting mandatory for UK-listed companies from 1 January 2027. Under the draft proposals, UK SRS S2 climate disclosures would be mandatory from the outset, while UK SRS S1 broader sustainability disclosures would apply on a “comply or explain” basis initially. This means CFOs with a January 2027 accounting period start date are preparing their first mandatory UK SRS report for publication in 2028 — but the materiality assessment, data collection, and governance structures must be in place by the start of that reporting period.

CFOs in unlisted large UK companies should not assume they are exempt. The UK Sustainability Reporting Requirements framework being developed by the Department for Business and Trade is expected to extend mandatory requirements progressively to large private companies, mirroring the trajectory of the Non-Financial Reporting Directive in Europe. According to Wolters Kluwer’s 2026 Future Ready CFO UK report, sustainability reporting and AI adoption rank as the two highest-priority finance transformation areas for UK CFOs in 2026. The time to build infrastructure voluntarily — before regulatory deadlines impose it under pressure — is now. Use INFORMD’s financial reporting templates to begin structuring your disclosure framework.

• Map your FCA listing category against the proposed mandatory applicability criteria and confirm whether the 1 January 2027 start date applies to your entity.
• Engage your external auditor now on assurance scope — limited versus reasonable assurance requirements are expected to phase in over time, and audit firms are already building capacity constraints.
• Present a UK SRS readiness roadmap to the board before year-end 2026, including investment requirements, data infrastructure needs, and assurance engagement plan.

Executive Action: confirm FCA applicability and engage auditors on assurance scope before Q4 2026.

How Should CFOs Build the Reporting Infrastructure for UK SRS Compliance?

UK SRS reporting requires data that most CFO functions do not currently collect at the precision and auditability the standards demand. Scope 1 and 2 emissions data must be attributable to specific assets and activities, reconcilable to financial accounts, and subject to internal controls consistent with those applied to financial data. Climate scenario analysis requires modelling capabilities and economic assumptions that sit at the intersection of finance, risk, and strategy functions — not in sustainability teams alone.

CFOs should treat UK SRS as a financial reporting expansion, not an ESG communications project. This means integrating UK SRS data collection into the financial close process, extending internal controls frameworks to cover sustainability data, and aligning UK SRS disclosures with the narrative reporting requirements under the Companies Act 2006 and the FRC’s Strategic Report guidance. Explore INFORMD’s CFO assessment tools to evaluate your current reporting infrastructure against these requirements.

• Integrate UK SRS data collection into the existing financial close and controls framework — do not run sustainability reporting as a separate parallel process.
• Invest in climate scenario modelling capability — either in-house or through a specialist adviser — to support the financial impact quantification UK SRS S2 requires.
• Align UK SRS disclosures with the Strategic Report to create a coherent, integrated narrative for investors and regulators across all reporting obligations.

Executive Action: integrate UK SRS into the financial close process before the 2027 mandatory period begins.

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