UK SRS 2026: What Listed Companies Must Do Now to Prepare

What Just Happened — And Why It Matters

After years of consultation, the UK has officially finalised its own sustainability reporting standards. UK SRS S1 covers general sustainability-related financial disclosures. UK SRS S2 covers climate-related disclosures specifically. Both are closely aligned with the International Sustainability Standards Board (ISSB) standards — IFRS S1 and IFRS S2 — which were published in June 2023 and are now being adopted in over 20 jurisdictions worldwide.

The Financial Conduct Authority (FCA) opened a consultation in January 2026 on making UK SRS mandatory for UK-listed companies. The consultation closes in the second half of 2026, with final rules expected by early 2027. First mandatory reporting periods are likely to cover financial years beginning on or after 1 January 2027.

This is not a voluntary framework. Once the FCA finalises its rules, UK-listed companies will be legally required to report against UK SRS or explain why they have not. The "comply or explain" model means non-compliance carries reputational and regulatory consequences.

The Three-Speed Problem: UK, EU, and US Divergence

What makes 2026 uniquely challenging is that the three major reporting regimes are moving in opposite directions. Understanding this divergence is critical for any company with cross-border operations or investors.

The UK is pressing forward with ISSB-aligned standards. UK SRS S1 and S2 adopt a single-materiality approach — focused on sustainability matters that affect enterprise value. This is investor-facing disclosure designed to inform capital allocation decisions.

The EU is retreating. Its Omnibus I directive, published on 26 February 2026, dramatically raised the thresholds for CSRD and CSDDD, exempting roughly 80% of previously in-scope companies. Wave 1 companies (the largest public-interest entities) may even defer reporting by two years. The EU's double-materiality approach — requiring disclosure of both financial impact and societal impact — remains technically in place, but the scope reduction signals a clear political pivot.

The US continues to move backward on federal ESG disclosure under the current administration. The SEC's climate disclosure rule remains stayed, and no new federal mandates are on the horizon.

For UK-listed companies with European operations, this creates a compliance puzzle. You may be simultaneously subject to UK SRS (single materiality, investor-focused), whatever remains of CSRD in EU member states where you have subsidiaries (double materiality, broader stakeholder focus), and potentially no federal requirements in the US. Aligning data collection and reporting systems across these divergent frameworks requires careful planning.

What UK SRS Actually Requires

UK SRS S1 requires companies to disclose material information about all sustainability-related risks and opportunities that could reasonably be expected to affect cash flows, access to finance, or cost of capital. This is structured around four pillars:

• Governance: How the board and management oversee sustainability-related risks and opportunities.
• Strategy: The actual and potential effects on business model, value chain, and financial position.
• Risk management: Processes for identifying, assessing, prioritising, and monitoring sustainability risks.
• Metrics and targets: Quantitative measures used to monitor performance and progress.

UK SRS S2 adds climate-specific requirements, including Scope 1, 2, and 3 greenhouse gas emissions, climate scenario analysis, transition plans, and physical and transition risk assessments. Companies already reporting under TCFD will recognise much of this structure — but UK SRS S2 goes further, particularly on Scope 3 value chain emissions and the use of climate-related scenario analysis.

A critical detail: UK SRS requires disclosure within the annual report, not as a standalone sustainability document. This means sustainability data must meet the same governance, assurance, and audit standards as financial reporting.

The TCFD Bridge — But Don't Get Complacent

Most UK-listed companies have been reporting against the Task Force on Climate-related Financial Disclosures (TCFD) framework since the FCA made it mandatory in 2022. This provides a strong foundation — UK SRS S2 deliberately builds on TCFD's four-pillar structure. However, there are material gaps:

• Scope 3 emissions: TCFD encouraged but did not mandate comprehensive Scope 3 reporting. UK SRS S2 requires it across all 15 Scope 3 categories, with a one-year transition relief for the first reporting period.
• Industry-specific metrics: UK SRS S2 incorporates SASB-derived industry metrics. A building materials company, for example, will need to report different metrics than a financial services firm.
• Scenario analysis rigour: TCFD accepted qualitative scenarios. UK SRS S2 pushes towards quantitative, financially-grounded scenario analysis tied to specific temperature pathways (e.g., 1.5°C and 3°C+).
• Connectivity: UK SRS S1 requires explicit connection between sustainability disclosures and financial statements — showing how sustainability risks translate into financial line items.
• Transition plans: While the UK Transition Plan Taskforce (TPT) framework is voluntary, UK SRS S2 requires disclosure of transition plans where they exist, creating strong pressure to formalise them.

Five Practical Steps to Prepare Before Mandatory Reporting

1. Conduct a gap analysis against UK SRS now. Compare your current TCFD disclosures against the full UK SRS S1 and S2 requirements. Focus on the areas where ISSB standards go further: Scope 3 completeness, industry-specific SASB metrics, scenario analysis quality, and financial connectivity. This single exercise will tell you exactly where the work is.
2. Start building your Scope 3 data pipeline. This is consistently the biggest gap. Comprehensive Scope 3 reporting requires data from suppliers, customers, and across your value chain. The companies that start supplier engagement now will have credible data by the first mandatory reporting period. Those that wait will be forced to rely heavily on estimates and spend-based proxies — which will attract scrutiny.
3. Integrate sustainability into annual report governance. UK SRS requires sustainability disclosures within the annual report, subject to the same board sign-off and (eventually) assurance processes. Start working with your auditors and board audit committee now to establish the governance framework. The FCA has signalled that limited assurance will be required initially, moving to reasonable assurance over time.
4. Map the cross-border compliance landscape. If you have EU subsidiaries, understand which of your entities remain in scope for CSRD post-Omnibus I. Build a reporting architecture that can serve both UK SRS and CSRD from a common data set, rather than running parallel processes. The single-materiality vs. double-materiality difference is real but the underlying data requirements overlap significantly.
5. Formalise your transition plan. The UK Transition Plan Taskforce (TPT) framework provides the gold-standard structure. Even though TPT disclosure is technically voluntary, UK SRS S2 requires you to disclose your transition plan if you have one — and investors increasingly expect it. A credible, detailed transition plan is becoming a competitive differentiator in capital markets.

Key Timeline

The Bottom Line

UK SRS is not a radical departure from what well-prepared companies are already doing. But it is a significant step up from TCFD in specificity, rigour, and legal enforceability. The companies that treat 2026 as preparation time — rather than waiting for final rules — will report confidently when mandatory requirements arrive. Those that delay will face a scramble.

The BSI's April 2026 Net Zero Barometer found that 82% of UK business leaders remain formally committed to net zero. But commitment and compliance-readiness are different things. The regulatory machinery is now in motion. The question is whether your reporting infrastructure can keep pace.