Your Guide to the UK Sustainability Reporting Standards
As the sustainability reporting ecosystem increases in complexity and requirements across the globe, there have been demands for streamlining and simplifying. Government response has been trickling down for a few years with CSRD coming into effect across the EU. And now the UK Government have devised and announced their own approach.
Many UK businesses need to take note and action now. Even if you don’t meet the reporting threshold, we expect to see many businesses impacted through supply-chain reporting. So, this guide is designed to tell you everything you need to know about the UK Sustainable Reporting Standards (UK SRS) and how to get ready.
We are also including access to a free, bespoke gap analysis and improvements. This report, designed specifically for your business by one of our consultants will tell you where you are against compliance requirements and the top actions you should prioritise over the coming months. Complete this assessment to get started (it takes no more than 10 minutes).
Reporting standards are a maze of acronyms and jargon. Our ESG and Sustainability Glossary is designed to help. It is worth having this open for reference as you navigate any new reporting standard.
What is UK SRS?
UK SRS is the UK's endorsed version of the international sustainability disclosure standards issued by the International Sustainability Standards Board (ISSB).
It's made up of two standards:
→ UK SRS S1 – General requirements for disclosing sustainability-related financial information
→ UK SRS S2 – Climate-related disclosures, covering governance, strategy, risk management, and metrics and targets
The standards are closely aligned to IFRS S1 and S2, but the UK version isn't identical. A few differences stand out:
→ No delayed reporting. Companies can't push sustainability disclosures out beyond their financial statements, so everything stays connected in the same annual report
→ No fixed effective date built into the standards themselves. Government and the FCA will set effective dates through separate regulation
→ SASB Standards shift from a "shall consider" to a "may consider" basis
→ Companies can explain, rather than fully disclose, financed emissions where estimating them isn't practical for the reporting period
Right now, UK SRS is available for voluntary use by any UK entity. Mandatory reporting is coming, but through separate regulatory routes, which is where the timelines get more specific.
Key timelines
Autumn 2026. FCA are expected to publish their final policy statement on mandatory listed company reporting.
15th December 2026. ISSA (UK) 5000 assurance standard becomes effective for any sustainability assurances on period beginning on or after this date.
1st January 2027. Proposed start of mandatory UK SRS reporting for in-scope companies, for accounting periods beginning on or after this date. Specifically, UK SRS S2, where there is no transitional relief other than on Scope 3 reporting which has a one year relief window.
2028. First UK SRS- aligned annual reports published for FY2027.
2029. The two-year transitional relief period for UK SRS S1 reporting ends, and reporting across the full standard is required on a comply or explain basis.
The detail that catches people out: the reporting deadline isn't the implementation deadline. If your accounting period starts 1st January 2027, your systems, data, and governance need to be ready before that date, not before the report is due.
Who needs to comply?
There are two tracks to watch.
Listed companies, via the Financial Conduct Authority. On 30 January 2026, the FCA published consultation CP26/5, proposing to replace the current TCFD-aligned Listing Rules with UK SRS-aligned reporting. This would apply to:
→ Commercial companies (UKLR 6)
→ Non-equity and non-voting equity shares (UKLR 16)
→ Transition category companies (UKLR 22)
These categories would report under UK SRS S2 (climate) on a mandatory basis, with UK SRS S1 (general/non-climate) subject to a longer transition period (likely 2029).
Companies with only a secondary UK listing or depositary receipts (UKLR 14 and 15) are treated differently. Rather than adopting UK SRS directly, they'd need to state which sustainability standards they follow in their home market, and where those disclosures sit.
Unlisted and private companies, via the Modernising Corporate Reporting (MCR) programme. Government is expected to consult on mandatory requirements for large private and unlisted entities later in 2026. Until that consultation lands, adoption for this group remains voluntary. However, it is worth noting that compliance includes supply-chain management and reporting which will likely hit your desk if you partner with companies who must comply.
If your organisation already reports under TCFD, SECR, or ESOS, UK SRS builds on and will eventually absorb much of that reporting. It doesn't replace it overnight though. Monitoring announcements is critical over the coming months.
How to prepare
Whether you're in scope now or bracing for a future consultation, the same groundwork applies.
→ Run a gap analysis. We are offering this service free of charge for a limited number of businesses. To get your free report, complete this short assessment.
→ Get your data systems in order. UK SRS demands granular, auditable data across Scopes 1, 2 and 3, plus scenario analysis against at least one Paris-aligned pathway. If your data currently lives in spreadsheets and inboxes, you need to build a robust, auditable data framework now. You can find advice on reporting and data management in our Sustainability Resource Hub. [LINK]
→ Review governance early. Boards need to be able to demonstrate oversight of sustainability-related risks and opportunities, not just sign off a report at the end. The frequency of Executive Committee and Board discussions will depend on the materiality of the risks posed. However, the critical thing is that the risk is assessed, mitigation actions agreed, controls in place with Board monitoring documented. We highly recommend having a Board appoint senior sponsor for ESG related risks.
→ Think about assurance now, not later. Assurance isn't mandatory yet, but the market is already tightening. ISSA (UK) 5000 comes into effect for periods from 15 December 2026, and assurance providers are reporting capacity constraints as the 2027 deadline approaches. Early conversations mean more choice. We can provide recommendations on assurers we have used in the past.
→ Don't wait. Compliance is coming. Being an early adopter helps you get ahead of competitors, but most importantly the process of complying will add value to your business through risk management, identifying opportunities and horizon scanning.
Our Findings
UK SRS S2 Readiness
We have been helping companies get compliant ready for the 1st January 2027 and one thing is common across them all. As they are already complying with TCFD they are almost ready for UK SRS S2 compliance but one consistent gap we see is financial assessments. Under UK SRS S2 you must assess the financial impact of climate risk on your income statement, balance sheet or cash-flow.
To achieve this requirement, you require the support of your finance colleagues. Utilising scenario planning models, with financial performance data will allow you to model the likely financial impacts. If you submit to CDP (a global climate disclosure assessment tool), you likely have a level of financial modelling in place. If you want to know more about CDP check out our guide.
UK SRS S1 Readiness
This is the biggest gap we see across businesses and where investment is needed now, not once the deadline hits. There are 5 key gaps we encourage you to get ahead of:
Assessing material topics. We see a lot of companies reporting on everything at a surface level. UK SRS expects material topics to be reported in detail. For advice on completing a materiality assessment check out our guide or get in touch.
Embed into your risk management framework. Material topics should be included in your risk management system, with clear risk statements, assessments, mitigation actions, controls and metrics. For example, if data protection is a material topic policies, training, reporting and testing should be in place with key measures attached.
Improve governance. The Board should have oversight of all material ESG topics. This may be delegated to the Executive Committee, Risk Committee or ESG Committee, with the Board receiving regular updates and agenda conversations. We recommend each material risk being overseen by an Executive level sponsor who is accountable for management of that risk.
Design your data framework. Data for UK SRS S1 will likely include supply-chain (human rights and modern slavery), information technology, AI, community, customer and employee data. We often see businesses with significant data gaps which will take time to correct, and needs to be in place one year ahead of your first report.
In our experience most companies who meet the initial compliance threshold have a single step to achieve UK SRS S2 compliance. However, UK SRS S1 compliance is where the majority of gaps lie. And this where investment is needed.
Where ENVOLV can help
We help businesses meet compliance requirements, bridging the gap between where reporting is today and what is needed to meet UK SRS. Where we add real value isn’t necessarily the polished, final report but turning compliance into a useful, strategic tool for your business.
For example, through TCFD compliance we identified a new market, developed the business case and supported the business to grow revenue from this market by 142% in 2 years.
UK SRS isn’t a tick box. It is a tool to identify risks and opportunities, embedding sustainability into the strategy of your business, de-risking and adding value. What’s not to like?
If you are looking at UK SRS and unsure where to start, then our gap analysis tool is perfect for you. Or get in touch for an initial consultation.
This guide reflects the position as at July 2026, based on the FCA's CP26/5 consultation and the final UK SRS published by the Department for Business and Trade. Final rules are subject to change once the FCA publishes its policy statement. This guide also includes our own experiences and perspectives therefore this does not constitute legal or regulatory advice.