SECR (Streamlined Energy and Carbon Reporting) and UK SRS (UK Sustainability Reporting Standards) represent two distinct approaches to corporate climate disclosure in the UK 12. SECR established rule-based GHG emissions reporting requirements in 2019, while UK SRS introduces judgement-based climate-related financial disclosure from 2027 4. Listed companies face dual obligations under both regimes, requiring sophisticated coordination of disclosure approaches, data sources, and reporting processes 6.
Scope & Application
SECR applies to three defined entity types through size-based thresholds: quoted companies (all sizes), large unquoted companies meeting a two-of-three test, and large LLPs 1. The qualification logic is rule-based with specific turnover (£36 million), balance sheet (£18 million), and employee (250) thresholds applied mechanically. Approximately 11,000 companies currently fall within SECR scope based on Companies House filing data.
UK SRS applies to listed companies through the FCA's proposed amendments to UK Listing Rules categories 6, 14, 15, 16, and 22 4. The scope is defined by listing status rather than size thresholds, covering listed companies in these five UKLR categories 4. Unlike SECR's mechanical application, UK SRS requires materiality judgements about climate-related risks and opportunities requiring disclosure.
| Aspect | SECR | UK SRS |
|---|---|---|
| Entity Types | Quoted companies, large unquoted, large LLPs | Listed companies (FCA-regulated) |
| Qualification Logic | Rule-based size thresholds | Listing status + materiality judgement |
| Approximate Scope | ~11,000 companies | UKLR categories 6,14,15,16,22 |
| Threshold Test | Two-of-three (turnover/balance sheet/employees) | No size threshold |
| Materiality Approach | Rule-based disclosure requirements | Judgement-based materiality assessment |
| Regulator | Companies House (filing) | FCA (listing rules) |
Disclosure Frameworks
SECR requires specific GHG emissions data following prescribed methodologies. Scope 1 and Scope 2 emissions are mandatory, with Scope 3 emissions required where material and where information is available 15. The framework emphasises quantitative emissions data with standardised intensity metrics. Energy consumption reporting and energy efficiency measures disclosure are also required.
UK SRS follows the four-pillar TCFD architecture: governance, strategy, risk management, and metrics and targets 2. The framework goes beyond emissions data to require disclosure of climate-related financial impacts, scenario analysis, transition planning, and governance arrangements. While GHG emissions form part of the metrics disclosure, the emphasis is on climate-related financial risk and opportunity assessment.
| Content Area | SECR | UK SRS |
|---|---|---|
| Primary Focus | GHG emissions and energy consumption | Climate-related financial disclosures |
| Architecture | Emissions-centric reporting | Four-pillar TCFD framework |
| Governance | Not specified | Board oversight and management responsibilities |
| Strategy | Energy efficiency measures | Climate risks, opportunities, business model |
| Risk Management | Not specified | Climate risk identification and management |
| Metrics | Scope 1, 2, (3) emissions + intensity | Cross-industry + industry-specific metrics |
| Scenario Analysis | Not required | Required for material climate risks |
| Transition Planning | Not required | Required where entity has transition plan |
Materiality Approaches
SECR operates through rule-based disclosure requirements with limited materiality considerations. All entities meeting the size thresholds must report Scope 1 and Scope 2 emissions using prescribed methodologies 1. Scope 3 emissions reporting is subject to materiality and information availability tests, but the thresholds themselves are applied mechanically without entity-specific materiality judgements.
UK SRS embeds materiality assessment throughout the disclosure framework. Entities must determine which climate-related risks and opportunities are material to their business model, strategy, and financial performance 2. This judgement-based approach means disclosure content varies significantly between entities based on their specific climate exposures and business contexts. The materiality assessment process itself must be disclosed.
Reporting Locations
SECR disclosure must appear within the Directors' Report as part of the annual report and accounts 13. This integrates SECR with existing corporate governance reporting requirements and ensures the information reaches shareholders and other stakeholders through established corporate communication channels. The Directors' Report is subject to specific approval and filing requirements under the Companies Act 2006.
UK SRS disclosure must appear within the Strategic Report under section 414CB(2A) of the Companies Act 2006 7. The Strategic Report provides the vehicle for forward-looking strategic information about business development, performance, and position. This location emphasises the strategic and financial nature of climate-related disclosures rather than operational emissions reporting.
| Reporting Aspect | SECR | UK SRS |
|---|---|---|
| Report Section | Directors' Report | Strategic Report |
| Legal Basis | SI 2018/1155 | Section 414CB(2A) + SI 2024/1303 |
| Content Nature | Operational emissions data | Strategic climate-related information |
| Audience Focus | Stakeholder transparency | Investor decision-making |
| Integration | Corporate governance reporting | Strategic business reporting |
| Approval | Board approval of Directors' Report | Board approval of Strategic Report |
| Filing Location | Companies House | Companies House |
Timeline Coordination
Both SECR and UK SRS follow Companies Act section 442 filing deadlines: nine months after financial year-end for private companies and LLPs, six months for public companies 3. This alignment means listed companies face simultaneous preparation and filing obligations for both regimes. However, the preparation cycles may differ due to the distinct data requirements and approval processes.
SECR requires annual emissions data collection and calculation, typically aligned with financial year-end processes. UK SRS requires ongoing monitoring of climate-related risks and opportunities throughout the year, with annual assessment and disclosure preparation 4. The UK SRS materiality assessment and scenario analysis work requires more lead time than SECR emissions calculations.
Transition Strategies
Listed companies already subject to SECR can build on existing emissions data collection and reporting processes for UK SRS implementation. SECR Scope 1 and Scope 2 emissions data provides a foundation for UK SRS metrics disclosure 52. However, UK SRS requires significant additional capability development in scenario analysis, climate risk assessment, and governance disclosure areas not addressed by SECR.
The most effective transition approach involves extending existing SECR processes rather than developing parallel systems. This includes expanding emissions data collection to support UK SRS metrics requirements, developing climate risk assessment capabilities to inform both disclosure regimes, and coordinating governance structures to oversee both SECR and UK SRS compliance 6. Integration reduces duplication while ensuring both regimes receive appropriate attention.
Key Takeaways
SECR and UK SRS address different aspects of corporate climate disclosure through fundamentally different approaches. SECR provides rule-based emissions transparency, while UK SRS provides judgement-based climate-related financial disclosure. Listed companies must navigate dual obligations requiring coordination of data sources, disclosure frameworks, and reporting processes.
Successful dual compliance depends on understanding the distinct purposes, requirements, and materiality approaches of each regime. While some synergies exist in emissions data collection, the different frameworks, reporting locations, and disclosure philosophies require integrated but differentiated compliance strategies.