UK Sustainability Reporting Standards: What you need to know

The UK’s new Sustainability Reporting Standards (UK SRS) mark a step change in how UK organisations will be required to report on sustainability topics. The standards have now been published, and the proposed implementation roll-out would require UK-listed companies to disclose financially material sustainability information, with mandatory climate-related reporting under UK SRS S2 expected from January 2027, subject to final FCA rules. It is also anticipated that similar requirements could be extended to other large private companies in due course. In our latest article, prepared for United Kingdom Environmental Law Association (UKELA) members, we explore what this means in practice for businesses and their advisers.

What are the UK SRS?

The UK SRS framework is built upon two core, interconnected disclosure standards. S2 focuses on climate, requiring disclosure of risks and opportunities, greenhouse gas emissions (including Scope 3), scenario analysis and quantified financial impacts of climate risk. Meanwhile, S1 expands the scope to wider financially material sustainability issues, which could include nature, biodiversity, water, supply chains and social and human rights.

A defining feature of the framework is its emphasis on financial materiality and connectivity. Sustainability disclosures must sit alongside financial statements and be directly linked to them. This means environmental and social risks must be clearly connected to financial performance and future business prospects.

When will reporting requirements come into force?

The timeline for listed UK companies is already clear. Mandatory climate-related disclosures under UK SRS S2 are expected from January 2027, with broader sustainability reporting under S1 expected to follow from 2029 on a comply-or-explain basis.

How can companies begin preparing for these changes?

Despite a relatively strong starting point due to existing TCFD-aligned reporting, many organisations will face a substantial gap between current practice and UK SRS expectations. In particular, businesses will need to strengthen their ability to quantify financial impacts, enhance scenario analysis and address ongoing challenges such as collecting robust Scope 3 data across value chains.

UK SRS disclosures will carry the same weight as financial reporting, placing them within directors’ duties under the Companies Act 2006. As a result, inaccurate or misleading disclosures could expose both directors and organisations to legal risk, making robust governance, audit trails and internal controls essential from the outset.

Who needs to be involved in preparation?

Preparation for UK SRS is a cross-functional effort.

• Sustainability teams will lead on identifying and assessing environmental and social risks.
• Risk and internal audit functions will help embed identified risks into enterprise risk frameworks and oversee controls and assurance.
• Legal teams will support materiality and liability considerations.
• Finance teams are essential for linking sustainability risks to financial performance.
• Supply chain teams will play a key role in gathering data, particularly across value chains.

Strong board and executive oversight is critical, with directors ultimately accountable for disclosures. However, UK SRS should be viewed as more than a compliance exercise. The process of identifying and managing sustainability-related risks and opportunities can help organisations strengthen resilience, inform transition planning, improve strategic decision-making and identify areas of long-term value creation. Organisations that bring these functions together early will be best placed to deliver robust disclosures while realising wider strategic benefits from the process.