UK SRS Scope 3 Reporting

Complete value chain emissions reporting under UK SRS S2 climate disclosures. Enhanced scope 3 requirements following GHG Protocol Scope 3 Standardwith UK-specific guidance for materiality assessment and PCAF financed emissions reporting.

15 Categories • Materiality-Based Reporting

15 Categories

Complete value chain coverage

Materiality Focus

Risk-based prioritization

PCAF Aligned

Financed emissions ready

Assurance Ready

Data quality controls

UK SRS Scope 3 Framework

Enhanced Value Chain Reporting Requirements

UK SRS scope 3 reporting builds upon GHG Protocol Scope 3 Standardwith enhanced requirements for materiality assessment and sector-specific guidance. UnderIFRS S2 paragraph 29, companies must disclose scope 3 emissions when material to climate-related risks and opportunities. Financial institutions must reportCategory 15 financed emissionsusing PCAF methodologies.

Reporting Principles

Materiality: Risk-based assessment of significant emission sources per GHG Protocol criteria
Completeness: All material categories within organizational boundaries
Transparency: Methodology disclosure and data quality indicators
Accuracy: Appropriate calculation methods and uncertainty assessment

UK-Specific Enhancements

Sectoral Guidance: Industry-specific methodologies and benchmarks
Supply Chain Integration: UK supplier engagement frameworks
Government Factors: BEIS 2025 emission factors and UK-specific data
Assurance Pathways: Preparation for mandatory scope 3 verification

Scope 3 Categories & Methodologies

Upstream Categories (1-8)

Upstream scope 3 emissions from purchased goods, services, and activities occurring before the reporting company's operations. Calculation methods follow GHG Protocol calculation guidancewith UK-specific emission factors from government conversion factors.

Categories 1-4: Purchased Goods & Services

Category 1: Purchased goods and services - upstream emissions from all purchased products
Category 2: Capital goods - emissions from manufactured capital goods
Category 3: Fuel and energy activities - upstream emissions from fuels and electricity
Category 4: Upstream transportation and distribution of purchased goods

Categories 5-8: Operations & Travel

Category 5: Waste generated in operations - disposal and treatment emissions
Category 6: Business travel - employee transport for business activities
Category 7: Employee commuting - home-to-work transport emissions
Category 8: Upstream leased assets - emissions from leased asset operations

Downstream Categories (9-15)

Downstream scope 3 emissions from sold products and services throughout their lifecycle. For financial services, Category 15 financed emissionsrequires asset class-specific methodologies per PCAF Global GHG Accounting Standard.

Categories 9-12: Product Lifecycle

Category 9: Downstream transportation and distribution of sold products
Category 10: Processing of sold products by third parties
Category 11: Use of sold products - emissions during product use phase
Category 12: End-of-life treatment of sold products

Categories 13-15: Investments

Category 13: Downstream leased assets - tenant emissions from leased properties
Category 14: Franchises - emissions from franchisee operations
Category 15: Financed emissions from investments and lending (mandatory for financial institutions)

Financed Emissions (Category 15)

PCAF Methodology for Financial Institutions

UK financial institutions must report financed emissions using PCAF Global GHG Accounting Standardmethodologies across asset classes. Requirements align with PRA supervisory expectationsand FCA PS21/23 climate risk guidance. Asset managers must include fund-level emissions across equity and bond portfolios.

Banking & Lending

Corporate Loans: Outstanding balance attribution to borrower emissions
Mortgages: Residential and commercial real estate energy use
Project Finance: Project-specific emissions over loan term
Trade Finance: Commodity and transaction-based emissions

Investment Management

Listed Equity: Market value attribution using EVIC methodology
Corporate Bonds: Outstanding amount attribution to issuer emissions
Real Estate: Property-level energy consumption and emissions
Private Equity: Portfolio company emissions with ownership share

Data Quality Scoring

Score 1: Verified emissions data from investee/borrower
Score 2-3: Unverified reported data and estimated data
Score 4: Activity-based and revenue-based estimates
Score 5: Asset class or sector average proxy data

Scope 3 Implementation Roadmap

Phase 1: Materiality Assessment (Months 1-2)

Conduct comprehensive materiality assessment following GHG Protocol screening approach. Prioritize categories based on size, influence, risk, stakeholder interest, and outsourcing criteria.

Value chain mapping and spend analysis
Category significance screening
Business model risk assessment

Stakeholder consultation on material categories
Quantitative threshold establishment
Reporting boundary documentation

Phase 2: Data Collection Systems (Months 3-8)

Establish data collection infrastructure for material categories using tiered approach from supplier-specific data to industry averages. Implement UK government conversion factorsand international databases.

Tier 1: Supplier Data

• Primary supplier surveys
• Product-specific LCA data
• Verified emissions reports

Tier 2: Secondary Data

• Industry average factors
• Database emission factors
• Regional proxy data

Tier 3: Estimates

• Economic input-output models
• Sector averages
• Financial proxies

Phase 3: Quality Assurance & Reporting (Months 9-12)

Implement quality assurance processes and prepare for external assurance. Develop reporting frameworks meetingISAE 3410 requirementsfor scope 3 emissions verification.

Data quality controls and validation procedures
Uncertainty quantification and sensitivity analysis
Audit trail documentation and evidence

External assurance provider selection
Disclosure format alignment with UK SRS S2
Continuous improvement process establishment

Master UK SRS Scope 3 Reporting

Expert support for value chain emissions measurement and reporting. Comprehensive scope 3 implementation with GHG Protocol and PCAF compliance.

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