Current Position (2026)
SECR Status
- Remains mandatory for quoted companies and large unquoted companies/LLPs
- In force since 1 April 2019
- Unchanged scope — approximately 11,900 organisations
- No modifications planned for 2026 filing cycle
UK SRS Status
- Standards published 25 February 2026 by the Department for Business and Trade
- FCA consultation closed 20 March 2026 on mandatory implementation
- Not yet mandatory — currently voluntary for all organisations
Both frameworks active in 2026
SECR remains fully in force while UK SRS exists as voluntary standards. No organisations are yet subject to mandatory UK SRS, but this is expected to change from 2027 onwards.
Proposed Changes from 2027
UK SRS S2 Mandatory Implementation
FCA CP26/5 proposes UK SRS S2 is proposed to become mandatory from 2027 for:
- Premium-listed companies on London Stock Exchange Main Market
- Standard-listed companies (subject to FCA Policy Statement)
- Approximately 515 primary-listed companies in initial scope
- Climate disclosures under UK SRS S2 framework
SECR Continues Unchanged
- Scope remains: Quoted companies + large unquoted companies/LLPs
- Requirements unchanged: Six core SECR disclosures continue
- Deadlines unchanged: Standard Companies House filing deadlines
- Government review promised: Interaction assessment to "reduce unnecessary duplication"
Scope Comparison
SECR Scope
| Category | Criteria | Estimated Number |
|---|---|---|
| Quoted companies | All UK-incorporated listed companies | ~1,400 |
| Large unquoted companies | Meet 2 of 3 size tests | ~9,500 |
| Large LLPs | Meet 2 of 3 size tests | ~1,000 |
| Total SECR scope | ~11,900 |
UK SRS S2 Scope (Proposed from 2027)
| Category | Criteria | Estimated Number |
|---|---|---|
| Premium-listed | Main Market listing | ~300-400 |
| Standard-listed | Subject to final FCA policy | ~100-200 |
| Total UK SRS scope | ~515 |
Key Differences
- SECR includes unquoted companies — UK SRS S2 does not (initially)
- UK SRS limited to listed — much smaller scope than SECR
- Different size thresholds — SECR uses company size tests, UK SRS uses listing status
Requirements Comparison
SECR Requirements (Current)
- UK energy consumption (kWh)
- Scope 1 emissions (tCO₂e)
- Scope 2 emissions (tCO₂e)
- Intensity ratio (emissions per business metric)
- Methodology description
- Energy efficiency actions
- Prior year comparatives
UK SRS S2 Requirements (Climate Standard)
- Governance — oversight of climate risks and opportunities
- Strategy — climate risks/opportunities and business impact
- Risk Management — climate risk identification and management
- Metrics and Targets — performance measurement including:
- Scope 1, 2, and 3 emissions
- Climate-related metrics
- Progress against targets
Coverage Overlap
- Scope 1 & 2 emissions: Both frameworks require these
- UK SRS much broader: Includes governance, strategy, risk management
- UK SRS includes Scope 3: SECR does not mandate Scope 3
- SECR simpler: Six discrete requirements vs comprehensive framework
What This Means for Different Company Types
Quoted Companies (Listed)
Current (2026):
- ✅ SECR mandatory — continue existing compliance
- ⚪ UK SRS voluntary — may adopt early for preparation
From 2027:
- ✅ SECR continues — six core requirements remain
- ✅ UK SRS S2 likely mandatory — comprehensive climate framework
- 📋 Dual compliance — manage both frameworks simultaneously
Recommendation: Start UK SRS S2 preparation during 2026 to enable 2027 compliance
Large Unquoted Companies
Current (2026):
- ✅ SECR mandatory — continue existing compliance
- ⚪ UK SRS voluntary — may adopt for competitive advantage
From 2027 onwards:
- ✅ SECR continues — primary mandatory framework unchanged
- ⚪ UK SRS remains voluntary — not in proposed scope
- 📋 Supply chain pressure — customers may require UK SRS alignment
Recommendation: Monitor customer ESG requirements and consider voluntary UK SRS adoption
Large LLPs
Current (2026):
- ✅ SECR mandatory — continue existing compliance
- ⚪ UK SRS voluntary — available but not required
From 2027 onwards:
- ✅ SECR continues — unchanged requirements and deadlines
- ⚪ UK SRS remains voluntary — LLPs not listed entities
- 📋 Client requirements — may face pressure from listed clients
Recommendation: Focus on SECR compliance, monitor professional service client demands
Government review of interaction planned
The government committed to "consider how the SECR requirements interact with UK SRS with a view to reducing unnecessary duplication where possible". This is a review commitment, not a phase-out announcement.
Transition Planning Considerations
For Quoted Companies
- Immediate (2026): Continue SECR compliance as normal
- Preparation phase: Begin UK SRS S2 gap analysis and data system preparation
- 2027 readiness: Establish processes for comprehensive climate disclosure
- Efficiency planning: Identify overlapping data collection and reporting processes
For Large Unquoted Companies/LLPs
- Core focus: Maintain robust SECR compliance systems
- Market monitoring: Track customer/supply chain ESG requirements
- Voluntary consideration: Assess business case for UK SRS adoption
- Future-proofing: Build SECR systems with potential UK SRS expansion in mind
Timeline Summary
| Date | Event | Impact |
|---|---|---|
| 1 April 2019 | SECR introduced | ~11,900 organisations in scope |
| 25 February 2026 | UK SRS published | Voluntary framework available |
| 1 January 2027 | UK SRS S2 proposed mandatory | ~515 listed companies affected |
| Future TBD | SECR-UK SRS review | Potential scope/requirement changes |
Key Differences Summary
| Aspect | SECR | UK SRS S2 |
|---|---|---|
| Status (2026) | Mandatory | Voluntary |
| Scope | 11,900 organisations | 515 listed companies (proposed) |
| Coverage | Energy + basic emissions | Comprehensive climate framework |
| Scope 3 | Not required | Required |
| Governance | Not required | Required |
| Strategy | Not required | Required |
| Filing | Part of annual accounts | Separate sustainability report |
The relationship between SECR and UK SRS is evolving. While SECR remains the primary mandatory framework for most organisations, quoted companies should prepare for dual compliance from 2027. The promised government review may bring changes, but SECR itself remains firmly in place as the UK's primary corporate climate disclosure requirement.