UK SRS and IFRS S2 climate disclosures explained
UK Sustainability Reporting Standards and IFRS S2 (International Financial Reporting Standard S2) are becoming central to climate disclosure. For companies, the practical question is not only whether the rules apply today. It is whether your governance, emissions data, climate risk process, financia
UK Sustainability Reporting Standards and IFRS S2 (International Financial Reporting Standard S2) are becoming central to climate disclosure. For companies, the practical question is not only whether the rules apply today. It is whether your governance, emissions data, climate risk process, financial planning and reporting controls are ready for investor-grade sustainability information.
The short answer
UK SRS (UK Sustainability Reporting Standards) are UK-endorsed sustainability reporting standards based on the International Sustainability Standards Board's IFRS S1 (International Financial Reporting Standard S1) and IFRS S2. IFRS S1 covers general sustainability-related financial disclosures. IFRS S2 focuses on climate-related disclosures. The FCA (Financial Conduct Authority) has consulted on aligning listed company sustainability disclosures with UK SRS.
In practical terms, the direction of travel is clear: climate disclosure is moving from narrative ESG (environmental, social and governance) commentary toward structured, financially material, decision-useful information. Companies should expect more scrutiny of governance, strategy, risk management, metrics, targets, transition plans and greenhouse gas emissions.
How UK SRS, IFRS S2 and TCFD (Task Force on Climate-related Financial Disclosures) fit together
Many companies are already familiar with TCFD. TCFD organised climate disclosure around four pillars: governance, strategy, risk management, and metrics and targets. IFRS S2 builds on that architecture but turns it into a fuller disclosure standard for climate-related risks and opportunities.
UK SRS adapts the ISSB (International Sustainability Standards Board) standards for the UK market. That means companies that already report against TCFD are not starting from nothing, but they may still need more detail, stronger controls and better links between sustainability information and financial reporting.
| Framework | Main role | Why it matters |
|---|---|---|
| TCFD | Climate disclosure recommendations. | Set the familiar four-pillar structure many companies already use. |
| IFRS S1 | General sustainability-related financial disclosures. | Creates a broader baseline for sustainability risks and opportunities. |
| IFRS S2 | Climate-related disclosures. | Sets detailed requirements for climate risks, opportunities, emissions and targets. |
| UK SRS | UK-endorsed versions of ISSB-aligned standards. | Provides the UK route for sustainability reporting alignment. |
What IFRS S2 asks companies to disclose
IFRS S2 asks for information about climate-related risks and opportunities that could reasonably be expected to affect an entity's prospects. That includes physical risks, such as flooding or heat stress, and transition risks, such as policy changes, carbon pricing, technology shifts, litigation and market demand changes.
The standard follows four broad areas:
- Governance: who oversees climate-related risks and opportunities, and how management is involved.
- Strategy: how climate risks and opportunities affect the business model, strategy, cash flows, access to finance and cost of capital.
- Risk management: how climate risks are identified, assessed, prioritised and monitored.
- Metrics and targets: what the company measures, including greenhouse gas emissions and progress against targets.
Why Scope 1, 2 and 3 data becomes more important
Climate disclosure standards need emissions data. A company cannot credibly explain climate transition risk without understanding where its emissions sit. That means Scope 1, Scope 2 and Scope 3 emissions move from being a voluntary sustainability exercise toward a reporting-control issue.
We explain the basics in Scope 1, 2 and 3 emissions explained, but the reporting implication is simple: companies need a repeatable method, source data, assumptions, evidence and review processes. A one-off spreadsheet may not be enough once disclosures are subject to investor, board, auditor or regulator scrutiny.
What companies should prepare now
Even before a rule applies directly, companies can prepare the foundations. The highest-value work is often basic but disciplined:
- Define board and management responsibility for climate disclosure.
- Create a climate risk register linked to enterprise risk management.
- Map Scope 1, Scope 2 and material Scope 3 data sources.
- Document emissions methodologies and assumptions.
- Connect climate risks to financial planning where material.
- Assess whether a transition plan exists and whether it is credible.
- Build an evidence file for claims, targets and metrics.
- Review whether sustainability data is controlled like financial data.
How this differs from CSRD (Corporate Sustainability Reporting Directive)
CSRD is the EU's corporate sustainability reporting regime and uses European Sustainability Reporting Standards. It is broader and uses double materiality, meaning companies assess both how sustainability issues affect the company and how the company affects people and the environment.
UK SRS and IFRS S2 are focused on sustainability-related financial information for capital markets. That does not make them lighter in practice. It means the disclosure lens is different. A UK-listed company, a UK supplier to EU groups and a business preparing for investors may need to understand both CSRD and UK SRS. For the EU angle, see our guide to CSRD for UK companies.
What good disclosure looks like
Good disclosure is specific. It identifies material risks, explains governance clearly, connects climate issues to the business model, uses consistent metrics, and avoids claiming certainty where assumptions are uncertain. It also distinguishes between targets, plans and actual performance.
Weak disclosure often has the opposite pattern: broad climate language, generic risk statements, unclear ownership, limited financial connection, unverified emissions data and targets with no delivery plan. That may have passed as ESG narrative in the past, but it is less likely to satisfy the next phase of reporting expectations.
Practical readiness checklist
- Can you explain who owns climate disclosure at board and management level?
- Can you identify your material physical and transition climate risks?
- Do you have Scope 1 and 2 data with supporting evidence?
- Have you assessed material Scope 3 categories?
- Are targets linked to a credible delivery plan?
- Can finance, legal, risk and sustainability teams agree on the same numbers?
- Do you retain evidence in a structured ESG data room?
Bottom line
UK SRS and IFRS S2 push climate reporting toward the quality expected of financial information. Companies that start with governance, emissions data, risk management and evidence controls will be better placed than those that wait for final compliance deadlines.
FAQ
Is UK SRS the same as CSRD?
No. UK SRS is based on ISSB standards and focuses on sustainability-related financial disclosures. CSRD uses ESRS (European Sustainability Reporting Standards) and double materiality. Some data overlaps, but the reporting lens is different.
Does IFRS S2 require Scope 3 emissions?
IFRS S2 includes greenhouse gas emissions disclosures, including Scope 1, Scope 2 and Scope 3 where required by the standard and subject to applicable reliefs. Companies should document methods, boundaries and data quality rather than treating emissions as a one-off estimate.
What is the best preparation step?
Start by assigning owners for climate governance, emissions data, risk assessment and evidence storage. Reporting quality depends on repeatable controls, not last-minute narrative drafting.