UK Sustainability Reporting Standards: Why it pays for businesses to get ahead.
The UK Sustainability Reporting Standards (UK SRS) are currently voluntary, with mandatory requirements expected to apply to listed and large companies from 2027. But the impact won’t stop there. Scope 3 (supply chain) emissions and financial risk and impact are central to the standards, so new data requirements will extend deep into supply chains. Organisations that get their data in order early could gain competitive edge with customers, strengthen investor relationships, build operational resilience and stay ahead of compliance.
How will this affect my organisation?
High-priority candidates for mandatory UK SRS are likely to include UK-incorporated listed companies already covered by FCA TCFD Listing rules. It’s expected that large UK-registered companies within existing TCFD/SECR thresholds (typically more than 500 employees and £500m turnover) will also be in-scope, subject to Companies Act amendments. Large pension schemes may also be included, along with some central government and large public sector organisations.
An official consultation on proposed rules to align sustainability reporting with UK SRS closed in March. The government intends to publish a Policy Statement in autumn 2026, with rules coming into force from 1 January 2027.
The nature of the reporting requirements means in-scope companies will have to provide key data related to their supply chains. So, even if your organisation is not in-scope, it’s important to understand and prepare for UK SRS if you supply goods or services to listed or large UK companies, directly or indirectly.
What will UK SRS mean in practice?
Based on the global International Sustainability Standards Board (ISSB) framework, UK SRS will involve detailed reporting on Scope 1, 2 and 3 emissions, climate risks and opportunities. It requires links to be made between sustainability factors and financial performance.
New mandatory climate-related disclosures are intended to help investors make more informed decisions about how they manage their assets and where they invest for the future. Smaller and privately owned companies may also be affected as evolving data expectations infiltrate the value chain. This may mean more reporting to customers but also presents opportunities to strengthen relationships. The ability of listed and large companies to advise investors on material sustainability and climate-related risks and opportunities will depend, in part, on supplier data, evidence, and assurance.
The most significant changes span three areas:
1. Scope 3 data requirements
Scope 3 emissions – those generated across a company’s value chain – are expected to be a core element of UK SRS. For some organisations, this could mean gathering emissions data from suppliers at a level they are not yet equipped to provide.
Suppliers may find they are asked to share product-level or activity-level emissions data, and to explain their methodologies. This will require a significant step-change in carbon accounting for some, but it also represents an opportunity to demonstrate credibility and responsibility as a key player in the value chain.
2. Financially linked climate disclosures
UK SRS places strong emphasis on how companies link sustainability risks and opportunities to financial performance.
For example, it is expected that companies will need to prepare a climate scenario analysis, modelling company response and performance under at least two global warming scenarios, one of which must be 1.5°C.
Physical factors (i.e. related to changing climate and weather conditions) and transitional factors (i.e. related to markets, regulations and technologies) will have to be considered. Their potential impacts on revenue, costs and asset values will need to be quantified, including the repercussions of supplier disruption, cost increases, or availability constraints.
Meeting these scenarios will require collaboration across the value chain so organisations can build a clearer picture of risk, dependency, and opportunity. Larger organisations will need to understand how suppliers might be disrupted, then predict how this might affect their own operations and financial outcomes.
3. Increasing scrutiny and assurance
Over time, sustainability disclosures will be subject to greater scrutiny. Companies that already have an established net zero commitment or emission reduction targets will have to disclose their baseline, methodology, and progress made. As a result, supply chain vendors may face more detailed requests from their customers to feed into reporting. This could include providing evidence to substantiate reported data, clear audit trails, and consistent methodologies. The need for robust, reliable information could quickly evolve into a need for new processes around the ongoing measurement and management of data.
These heightened expectations may introduce new challenges initially, but in time they will improve transparency, traceability and governance for boards, investors and customers. They will also help to future-proof companies and their supply chains.
Learning from other markets
In Australia, climate-related disclosures are already being phased in for large organisations. Our work with clients in this market shows that building the data, systems, and cross-functional processes to support robust reporting takes time, but it also delivers lasting value.
Organisations that start early are better positioned to improve operational resilience, strengthen supply chain visibility, and make sustainability a core part of business operations.
Take climate scenario analysis. Forecasting the impact that different levels of global warming may have on the business and wider value chain generates rich insights which give business leaders a head start in understanding how external forces may impact the business in the not too distant future. In turn, this enables more informed decisions on how to remain relevant, resilient and competitive.
How to get ahead of UK SRS
Whether your organisation will be affected directly or as a supply chain partner, early preparation will make a big difference to how effectively you respond, and how much value you derive from the process.
At this stage, areas to prioritise include understanding your likely exposure, assessing the maturity of current data, and engaging with customers and/or suppliers.
Scope 3 emissions will be a major pressure point for many organisations, so tackling it now could minimise future costs, reduce risk, and result in a stronger commercial position. In terms of net zero and emissions reduction targets, gaining target validation from the Science-Based Targets Initiative will help set companies up for many of the future requirements.
UK SRS marks a significant development in UK corporate sustainability disclosures. While the exact scope and timings are still being finalised, it’s important to understand that the interplay between sustainable and financial performance will become deeper and more nuanced. Getting ahead of the requirements isn’t just about compliance, it’s about building the data, insight, and resilience needed to remain competitive and make better decisions in an increasingly complex and climate-sensitive market.
