UK Sustainability Reporting Standards (UK SRS) Compliance Support

Q: Why is there no effective date listed in the published UK SRS S1 and S2 standards?

T he UK SRS documents themselves do not contain a fixed effective date because the UK Government separates the creation of the standards from the enforcement . The standards are available for voluntary use now. However, the Government and regulators will set exactly who must report and when through future legislation or rule changes, such as amendments to the Companies Act.

Q: Are Scope 3 emissions strictly mandatory under the new UK SRS?

Not immediately . The Government explicitly supports a climate-first transition, which includes specific reliefs for Scope 3 emissions in the early years of adoption. For listed companies under the FCA’s proposed rules, reporting on Scope 3 emissions will operate on a comply or explain basis initially.

Navigate the transition from TCFD to the UK SRS with confidence, reduce risk, and ensure audit-ready compliance.

The UK Sustainability Reporting Standards (UK SRS) have arrived, fundamentally shifting how UK businesses must report on their sustainability and climate-related risks. Endorsed and published by the Government, the standards are available for voluntary use as of February 2026. However, the transition to mandatory reporting is already underway.

With the Financial Conduct Authority (FCA) consultation (CP26/5) proposing mandatory reporting for listed companies starting from 2027 accounting periods and large private companies expected to require mandatory reporting soon after, early preparation is critical to reduce your future transition costs and compliance risk.

What is the UK SRS?

The UK SRS is the UK’s endorsed version of the International Sustainability Standards Board (ISSB) IFRS S1 and S2 sustainability reporting standards. Crucially, it focuses strictly on financially material sustainability risks and opportunities, rather than wider impact reporting or double materiality.

The standards are designed to supersede existing TCFD-aligned regimes over time and are divided into two main pillars:

UK SRS S1 | General sustainability-related financial disclosures.

UK SRS S2 | Climate-related disclosures, which are aligned to the familiar TCFD structure but require significantly more granular data.

UK SRS vs UK SDR: What's the difference?

The UK SRS is frequently discussed alongside the UK SDR (Sustainability Disclosure Requirements). To clarify:

UK SRS is the specific corporate reporting mechanism within that wider SDR framework. It is the standardised tool companies will use to disclose their financial sustainability data to the market.

UK SDR is the overarching, economy-wide regulatory framework introduced by the UK Government. It includes anti-greenwashing rules, investment product labels, and transition plan expectations.

Who needs to comply and when?

The approach to mandatory compliance is split between the FCA and the Government. This regulatory split explains why listed customers are feeling the pressure to act sooner than private ones.

For Listed Companies (FCA Remit)

The FCA consultation (CP26/5), which closed in March 2026, outlines the proposed timeline for UK listed commercial companies, transition category companies, and secondary listed issuers. They propose mandatory reporting starting from 2027 accounting periods.

UK SRS S2 (climate) will be mandatory. UK SRS S1 (general) and Scope 3 emissions will operate on a comply or explain basis initially, with the intent to move to mandatory later.

For Large Private Companies (Government Remit)

Private companies are currently out of scope for the FCA and will be addressed separately via future changes to the Companies Act.

Mandatory application dates have not yet been set but are highly likely to arrive in the next few years.

The Government supports a climate-first transition, allowing staged adoption and reliefs for Scope 3 emissions in the early years.

Are you required to report on UK SRS or want to do so voluntarily?

Chat with our experts to get an initial diagnostic on your critical data gaps, audit readiness, and a transition health check.

What to expect in the coming years

If you are currently reporting under TCFD, you should assume UK SRS is coming for your business. Your current TCFD work is a valuable starting point, but it is not enough to meet the new standards.

In the coming years, UK businesses must prepare for:

Broader scope: Moving beyond just climate to encompass wider sustainability risks and opportunities over time.

Stronger financial linkage: Expect clear, required connections between your sustainability disclosures, your financial statements, and corporate risk management.

More granular data: Deep dives into governance, strategy, metrics, targets, and scenario analysis.

Higher audit readiness: Both the FCA and the Government are signalling rising expectations for external assurance. Poor data quality will become visible to investors quickly.

Reduced flexibility: There will be far less narrative freedom than TCFD allowed once UK SRS becomes mandatory.

How can we help?

UK SRS is fundamentally about financial risk and resilience rather than a branding or ESG exercise. Whether you are a listed company facing the 2027 FCA deadline or a large private company feeling early pressure from investors and lenders, our compliance experts provide:

Urgent Gap Analysis

We evaluate your existing TCFD disclosures against the rigorous requirements of UK SRS S2.

Data & Systems Maturity

We help upgrade your data collection and governance structures, ensuring your disclosures are audit-ready.

Strategic Transition Planning

Early alignment reduces future transition pain. We map out a phased, practical route to full compliance for your sector.

Sunny coastal view with plants framing the foreground.

JDR Cables Systems – Net Zero Strategy

As part of their commitment to sustainability, JDR sought to build a Net Zero strategy with global climate objectives. Recognising that over 95% of their emissions originate from their supply chain, a core element of their ambitions was to enhance data collection, improve supplier collaboration, and integrate environmental considerations into procurement decisions

Read the case study in full

UK Sustainability Reporting Standards FAQs

Does the UK SRS require double materiality reporting like the EU CSRD?

No, it does not. The UK SRS focuses strictly on financially material sustainability risks and opportunities. It does not introduce double materiality, which means you are not required under these specific standards to report on your broader impact on society or the environment unless it poses a direct financial risk or opportunity to your enterprise. However, a double materially assessment can strengthen your overall sustainability disclosure.

Why is there no effective date listed in the published UK SRS S1 and S2 standards?

The UK SRS documents themselves do not contain a fixed effective date because the UK Government separates the creation of the standards from the enforcement. The standards are available for voluntary use now. However, the Government and regulators will set exactly who must report and when through future legislation or rule changes, such as amendments to the Companies Act.

Are Scope 3 emissions strictly mandatory under the new UK SRS?

Not immediately. The Government explicitly supports a climate-first transition, which includes specific reliefs for Scope 3 emissions in the early years of adoption. For listed companies under the FCA’s proposed rules, reporting on Scope 3 emissions will operate on a comply or explain basis initially.

Will the UK SRS conflict with my global reporting under IFRS S1 and S2?

No. The UK SRS is the officially endorsed UK version of the ISSB standards. It is built directly on IFRS S1 and IFRS S2. A primary policy intent of the UK Government is to maintain strong alignment with the ISSB global baseline and deliberately avoid unnecessary UK-specific divergence.

If my business is a private company, do I need to worry about the FCA consultation?

No, private companies are out of scope for the FCA’s CP26/5 consultation. The FCA regulates listed commercial companies, transition category companies, and secondary listed issuers. Private companies will be addressed separately by the Government. However, private companies may still feel earlier pressure to align with UK SRS voluntarily due to demands from investors and lenders.