Level 2 · Decision guide·UK SRS S2 · Disclosure guides
UK SRS S2 Industry-Based Metrics: Optional SASB Guidance but Mandatory Industry Judgement
How to distinguish the optional use of specific SASB or IFRS industry guidance from the continuing requirement to provide relevant industry-based climate information
Published passport
Current as at 10 August 2026
Reviewed by
Dr Ross KurinkoLinkedIn
Strategic ESG Advisor · IFRS S1 & S2 / GRI / ESRS expert
GRI Certified Global Trainer · PhD, University of Cambridge · ESG-AI expert
15+ years on FTSE 100 & Fortune Global 500 disclosures
Canary Wharf, London
LRA educational guidance · Not issued or endorsed by UK Government
Edition written against
—
UK SRS S2 is final and available for voluntary use. Any mandatory scope or filing requirement …
Published
10 Aug 2026
Knowledge Hub guide
Last reviewed
10 Aug 2026
Short answer
The answer, before the reasoning
Yes. UK SRS S2 still requires an entity to disclose industry-based metrics associated with business models, activities or other common features that characterise participation in an industry. What is optional is the specific reference to, and consideration of, the IFRS S2 Industry-based Guidance.
An entity may use that guidance, SASB materials, another suitable standard-setter or industry source, peer information, and entity-developed metrics, provided the resulting information is relevant, faithfully representative and connected to material climate-related risks and opportunities. The entity must also identify the sources of guidance and industries it actually applied. “May refer to” changes the source-selection rule, not the disclosure objective. A defensible process shows how the entity identified its industries, considered plausible metric sources, selected or adapted metrics, controlled non-use decisions and avoided choosing only favourable measures.
Educational practitioner guidance. Not legal or assurance advice. Verify the current UK SRS text, applicable reporting rules and entity-specific facts before acting.
Quick orientation
Quick orientation
- Applies to
- Entities applying UK SRS S2 voluntarily or preparing for possible future requirements, particularly diversified groups and organisations whose climate exposures differ by business line.
- Primary decision
- Which industry-based metrics are relevant to the entity’s material climate matters, and which source or entity-developed measure best meets the information need.
- Key sources
- UK SRS S2 paragraphs 28(b), 32 and 37; UK SRS S1 paragraphs 46-50 and 55-59; the government consultation response explaining the UK amendment.
- Common confusion
- Reading “may refer to and consider” as permission to avoid industry analysis, rather than permission to choose a suitable source for mandatory industry-based information.
The UK amendment changes the route, not the destination
UK SRS S2 separates two propositions. First, the entity is required to disclose industry-based metrics associated with particular business models, activities or common industry features. Secondly, when identifying those metrics, the entity may refer to and consider the specific IFRS S2 Industry-based Guidance. The government deliberately changed the source wording from “shall” to “may”, but retained the underlying requirement to provide relevant industry-based information.
This distinction matters because an entity can comply with the industry-information objective without adopting every metric in a named SASB industry. Conversely, simply stating that SASB is optional does not justify a climate disclosure composed only of the seven cross-industry categories. The reporting team must still exercise industry judgement.
Industry-based metric selection starts with the entity’s climate matters and industries, then tests candidate sources before a controlled disclosure decision.
In practice
| Question | UK SRS S2 answer | Practical consequence |
|---|---|---|
| Must the entity provide industry-based metrics? | Yes, where associated with its business models, activities or common industry features. | Create a documented industry and metric assessment rather than relying only on generic cross-industry measures. |
| Must the entity use the specific IFRS S2 Industry-based Guidance? | No. It may refer to and consider that guidance. | Use, adapt or reject specific guidance after a reasoned relevance and faithful-representation test. |
| Can another source be used? | Potentially, subject to UK SRS S1 and consistency with UK SRS. | Record the source, version, rationale, conflicts check and resulting metric design. |
| Can management use an entity-developed metric? | Yes, where necessary to provide useful information, with required method disclosures. | Define the metric, explain why it is useful and control calculation, comparatives and changes. |
| Must sources used be disclosed? | Yes. UK SRS S1 requires identification of sources and industries applied. | Prepare a concise public source statement backed by a detailed internal selection record. |
What “industry-based” means in practice
An industry-based metric is not merely a figure commonly published by competitors. It should be associated with the business model, activities or common features that characterise participation in an industry and should help users understand performance in relation to climate-related risks and opportunities. The metric therefore needs a clear connection to the entity’s prospects, strategy, risk management, capital allocation or target performance.
In practice
| Metric type | Example information need | Possible metric design — Control question |
|---|---|---|
| Asset-intensive manufacturing | Exposure to energy and process transition | Energy intensity by production unit; low-carbon capex as a proportion of relevant capex; process-emissions intensity — Is the denominator stable and does the boundary match the exposed production activity? |
| Commercial property | Physical and transition exposure of buildings | Floor area by energy-performance band; assets exposed to flood or heat; retrofit capital deployed — Are asset values, floor area and hazard data aligned to the same population and date? |
| Banking | Financed transition exposure and portfolio response | Financed emissions; sector exposure by transition characteristic; climate-linked finance deployment — Are portfolio boundaries, attribution factors and exclusions transparent and controlled? |
| Software or professional services | Operational and value-chain emissions, workforce and commercial opportunity | Data-centre energy or emissions intensity; business-travel intensity; revenue from defined climate solutions — Does a low direct-emissions profile conceal material purchased-energy, travel, supplier or product effects? |
A controlled hierarchy of possible sources
UK SRS S1 permits judgement in selecting relevant information and allows several sources to be considered, provided they do not conflict with UK SRS. A practical hierarchy starts with UK SRS requirements, then evaluates industry guidance and other sources against the same information objective. The hierarchy is not a licence to browse until a convenient metric appears.
1. Apply the explicit UK SRS S2 cross-industry and target requirements first. Industry metrics supplement rather than replace those disclosures.
2. Identify the entity’s material climate-related risks and opportunities, business-model characteristics and management decisions. These define the information need.
3. Consider the IFRS S2 Industry-based Guidance and relevant SASB industry materials as candidate sources, not as an automatic checklist.
4. Consider other authoritative standard-setter or regulatory sources designed to meet investor information needs, where they do not conflict with UK SRS.
5. Review credible industry practice and peer metrics for comparability, while recognising that common publication does not prove relevance or quality.
6. Design an entity-specific metric where no external metric faithfully represents the matter or where management relies on a more suitable measure.
7. Document the source actually applied, the industry classification, adaptations, rejected high-risk candidates and review approval.
Rule
IMPLEMENTATION PRINCIPLE
<p>The more an entity departs from a recognised metric or uses a bespoke denominator, the stronger its definition, methodology, comparability and governance evidence should be.</p>
How to handle a diversified or multi-industry group
A consolidated reporting entity may participate in several industries. The analysis should not force the whole group into the parent’s legal classification or the largest revenue segment. It should identify the business lines, assets or activities that drive material climate-related risks and opportunities, then test relevant industry metrics for each.
1. Create an activity map using revenue, assets, capital expenditure, emissions, risk concentrations and strategic importance rather than a single industry code.
2. Identify which activities are material to the climate disclosure and whether they require different industry lenses.
3. Assign candidate industry descriptions and explain overlaps, vertically integrated activities and emerging businesses.
4. Assess metric relevance at the appropriate level: group, segment, portfolio, asset class, geography or product line.
5. Prevent double counting where two industry sources describe the same underlying population or capital deployment.
6. Aggregate only where definitions, boundaries and denominators remain understandable. Otherwise disclose disaggregated metrics or explain the combined method.
7. Review whether acquisitions, disposals or strategy changes alter the industry map and comparative basis.
A diversified group can use several industry lenses while preserving one governed source-selection and metric-control process.
In practice
The metric-selection record
| Field | What to record |
|---|---|
| Climate matter and decision use | The material risk or opportunity, affected prospects, management decision and user information need. |
| Industry and activity | Industry source considered, business line or activity covered, and reason the classification is relevant. |
| Candidate metric | Metric label, source, version, topic and original definition. |
| Relevance assessment | How the metric connects to business model, risk, opportunity, strategy, target or capital allocation. |
| Faithful-representation assessment | Boundary, completeness, neutrality, measurement uncertainty and risk of obscuring material facts. |
| Adaptation | Changes to definition, unit, denominator, scope or method and why they improve usefulness. |
| Non-use rationale | Why a plausible candidate was not used; for example, immaterial activity, unavailable denominator that cannot be estimated usefully, or conflict with the entity’s facts. |
| Metric governance | Owner, source systems, calculation, estimate hierarchy, reviewer, approval, comparative and change-control rule. |
| Public source statement | The standards, guidance, industry practice and industries actually applied. |
Hypothetical example: a diversified infrastructure group
The activity map shows that physical resilience of network assets, renewable-project delivery and engineering workforce capacity create different information needs. The team retains selected network reliability and capital-deployment metrics, adds renewable-generation availability and project pipeline measures from another authoritative industry source, and develops an entity-specific metric for climate-resilience capital that reconciles to the approved investment plan. The engineering-services business does not receive a separate published metric because its climate effects are not material to group prospects, but the non-use conclusion is recorded.
The result is not “SASB compliance”. It is a UK SRS S2 metric set supported by documented industry judgement, source selection, entity-specific definitions and governance review.
Hypothetical scenario
ILLUSTRATIVE SCENARIO
<p>A hypothetical group owns regulated networks, renewable-generation assets and a small engineering-services business. The reporting team initially selects only the electric-utilities SASB metrics because that is the parent’s historic classification.</p>
Illustrative only. It shows how the decision is made, not wording that can be copied or relied on.
Illustrative disclosure of sources used
This wording works only when the entity can show which topics and metrics were considered, which were applied, how adaptations were controlled, and why the resulting set is complete. It should not be copied if the entity used different sources or did not perform the underlying assessment.
Hypothetical scenario
ILLUSTRATIVE WORDING — ADAPT TO FACTS
<p>In identifying industry-based climate metrics, the Group considered the IFRS S2 Industry-based Guidance and relevant SASB industry materials for electric utilities and renewable energy activities, together with UK regulatory information and metrics used internally for capital allocation. We applied selected metrics where they were relevant to the Group’s material climate-related risks and opportunities and adapted definitions where necessary to align with the reporting boundary and approved investment plan. The basis, methodology and changes for each reported metric are described with the metric.</p>
Illustrative only. It shows how the decision is made, not wording that can be copied or relied on.
In practice
Weak versus stronger practice
| Weak practice | Why it fails | Stronger practice |
|---|---|---|
| “SASB is optional, so we report no sector metrics.” | Confuses optional specific guidance with the mandatory industry-information requirement. | Document the industry analysis and select useful metrics from SASB, other sources or entity-developed measures. |
| Use every metric in one SASB industry. | Treats a candidate source as a compliance checklist and may obscure material information. | Test each relevant topic and metric against the entity’s material climate matters and activities. |
| Choose only metrics showing positive performance. | Creates cherry-picking and neutrality risk. | Use completeness controls, rejected-metric records and reviewer challenge. |
| Copy peer metrics without definitions. | Peer use does not establish boundary, method or comparability. | Reconstruct the metric definition, evidence and decision use before adoption. |
| State “aligned with SASB”. | May overstate the actual source use or imply a broader claim. | Identify the specific sources, industries and metrics actually applied. |
Common review findings
The report contains cross-industry metrics but no evidence of an industry-based assessment.
The legal-entity industry code is used without considering material activities, portfolios or vertical integration.
A single industry lens is applied to a diversified group without explaining excluded business lines.
Metrics are copied from SASB or peers but the population, unit, denominator and period differ.
Entity-developed metrics are presented without explaining their definition, usefulness or changes.
Rejected metrics are undocumented, making completeness and cherry-picking difficult to challenge.
The report identifies “SASB” generally but not the industries or sources actually applied.
Industry metrics are disconnected from climate risks, strategy, targets or financial effects.
Myth
“Because the UK changed ‘shall refer’ to ‘may refer’, industry-based climate metrics are voluntary.”
Reality
The specific IFRS S2 Industry-based Guidance is optional as a source. UK SRS S2 still requires relevant industry-based metrics, and UK SRS S1 requires disclosure of the sources and industries actually applied.
Readiness
Pre-publication checklist
- Material climate risks and opportunities have been linked to business models, activities and industry features.
- All material business lines and emerging activities have been considered, not only the parent’s industry code.
- Candidate SASB or IFRS industry guidance has been considered where relevant, without treating it as mandatory or exhaustive.
- Alternative authoritative sources and industry practice have been conflict-checked against UK SRS.
- Entity-specific metrics explain definition, purpose, method, boundary and comparatives.
- Metric inclusion, adaptation and non-use decisions are documented and reviewer-approved.
- Cross-industry and industry-based metrics are connected to targets, strategy and financial effects.
- The public report identifies the sources and industries actually applied.
- Source versions and update triggers are controlled.
- The wording does not imply SASB compliance or automatic UK SRS compliance.
Self-check
- Could a reviewer explain why each published industry metric is useful for a material climate matter?
- Does the group industry map reflect material activities rather than only legal labels or revenue size?
- Can the team demonstrate that unfavourable but relevant metrics were not excluded for presentation reasons?
- Does the source statement accurately describe what was actually applied?
Take it with you
The checklists as a working spreadsheet
Every checklist and table on this page, with empty status, owner and evidence columns for your team to fill in and keep.
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