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ESRS and CSRD

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UK SRSThe UK Sustainability Reporting Standards, ESOS, SECR and TCFD, read against the published text.HUBUK SRS GuideAn independent reference guide to UK SRS, ESG, TCFD, SECR, ESOS and the global standards.YOU ARE HEREGlobal Reporting StandardsSustainability reporting standards worldwide: ISSB, the EU CSRD after Omnibus I, California SB 253 and SB 261, and UK SRS.UK SRS StandardsUK SRS S1 and S2 at the provision: reliefs, comply or explain, and the FCA statements.ESOS QuestESOS Phase 4 in depth: qualification, the audit, sign-off, action plans and penalties, read against the Regulations.SRS EngineeringThe data build behind a UK SRS report: metrics, owners, controls and timing.SRS ReportWhat a UK SRS report contains, how it is assembled, and how to read one.UK SRS ReportAnalysis and commentary: CDP, the DESNZ emission factors, SECR and ESOS, with every figure cited.UK SRS NewsThe cluster's news publication, and what a UK SRS report contains.UK SRS DeliveryTemplates, costs, ESOS delivery guides and readiness assessment.UK SRS FinanceFinanced emissions, PCAF and IFRS S1/S2 for banks, insurers and asset managers.SECRStreamlined Energy and Carbon Reporting: deadlines, thresholds, eligibility and guidance.Carbon CreditsCarbon credit ratings, risk analysis, valuation and market structure.Environmental RegimesThe eight UK environmental reporting regimes, their thresholds, deadlines and regulators.UK SRS ServicesThe services arm: ESOS, SECR, net zero and sustainability consultancy.

Standards and reporting

ESG data collection

ESG data collection turns a reporting question into a defined measure with a responsible owner, a traceable source and a reviewable calculation.

What is ESG data collection?

It is the practical process of defining, obtaining, checking and documenting information for a specific reporting purpose, informed by the criteria the organisation has chosen.

Define before askingRequirements and evidence

Module 01 / 04

Purpose

Name the disclosure or decision that needs the information.

Read the detailed guidance and evidence

A request for energy data is incomplete until the recipient knows the sites, dates, units and treatment of shared premises.

The GHG Protocol Corporate Standard emphasises relevance, completeness, consistency, transparency and accuracy for emissions inventories Corporate Standard chapter 1.

Use the reporting standards overview to identify the applicable framework before building a universal questionnaire.

What belongs in an ESG data dictionary?

An original working dictionary should define each measure before teams populate its values.

Editorial working structure rather than an additional reporting standard.
FieldWhat to recordWhy it helps
Metric IDA stable internal referenceKeeps changing labels from breaking the evidence trail
DefinitionIncluded and excluded activityPrevents different teams answering different questions
UnitOriginal and reporting unitsExposes conversion mistakes
PeriodStart and end datesPrevents mixing calendar and financial years
BoundaryEntity, site and relevant populationMakes coverage reviewable
MethodCalculation and estimation approachSupports reproduction and comparison
Read the detailed guidance and evidence

Keep a definition-change record when the measure changes rather than silently replacing the previous meaning.

A working dictionary should be understandable to a colleague who did not design the spreadsheet.

How should the reporting boundary be set?

For emissions, the organisational and operational boundaries affect what enters the inventory, so the boundary decision belongs beside the data request Corporate Standard chapters 3–4.

Draw the boundaryRequirements and evidence

Module 01 / 04

Entities

Identify included legal entities and consolidation decisions.

Read the detailed guidance and evidence

Do not assume that paying an invoice determines the emissions scope without reviewing the chosen boundary.

UK SRS S2 asks for disclosure of measurement approaches, inputs and assumptions, including changes and reasons Paragraph 29(a)(iii).

When a site opens, closes or moves, document the treatment before merging its records into a group total.

Who should own and approve the data?

Separate evidence collection, calculation and approval responsibilities so an unanswered question has a named next action.

Editorial responsibility model; organisations can combine roles where appropriate.
RolePractical responsibilityHandover item
Reporting leadDefines the requirement and coordinates the closeApproved dictionary and timetable
Data ownerObtains records and explains coverageSource index and completeness statement
PreparerTransforms records using the agreed methodCalculation file and assumptions
ReviewerChecks definitions, coverage and exceptionsRecorded review and questions
ApproverAuthorises the figure for its stated useApproval reference and date
RecipientUses the agreed outputReport version and context
Read the detailed guidance and evidence

A software administrator is not automatically the person able to explain a fuel invoice or a workforce definition.

For a small team, a second review of the highest-risk calculations may be more useful than a complicated approval hierarchy.

What does a usable evidence trail look like?

A usable trail connects the reported value to a source, its coverage, the calculation and the final review decision.

Follow the recordRequirements and evidence

Module 01 / 04

Record ID

Give the invoice, extract or response a stable identifier.

Read the detailed guidance and evidence

The Corporate Standard’s transparency principle calls for a clear audit trail for the inventory Chapter 1.

Store evidence where an authorised reviewer can access it without relying on the preparer’s personal inbox.

The data management software guide includes procurement questions about access, exports and evidence ownership.

How do you distinguish missing data from zero?

Use explicit working statuses so a blank, an estimate and a confirmed absence of activity cannot collapse into the same number.

Original editorial status vocabulary; these labels do not create framework-specific disclosure exemptions.
Working statusMeaningReviewer action
Confirmed actualSupported measurement or source recordCheck period, boundary and unit
Confirmed zeroEvidence supports no relevant activityRetain the basis for the zero
MissingRequested information has not been obtainedAssign an owner and next action
EstimatedA documented method substitutes for missing detailReview method, assumptions and coverage
Not applicableThe defined field does not applyRetain the applicability decision
Pending reviewPrepared but not yet approvedKeep it out of approved outputs
Read the detailed guidance and evidence

In the fictional register, an empty amount with a missing status remains empty rather than being converted to zero.

A reporting framework may allow an estimate or relief, but the working status alone does not authorise its use.

How should units and conversion factors be controlled?

Keep activity units, factor units, factor version and the calculation together, and match government factor selection to the activity period Methodology paragraphs 1.9–1.10.

Keep the dimensionsRequirements and evidence

Module 01 / 04

Original unit

Preserve the unit shown by the source record.

Read the detailed guidance and evidence

The annual government collection is a series of dated factor sets rather than a single permanently current spreadsheet Government factor collection.

The 2026 flat file was corrected after publication, illustrating why a year alone may not identify the exact downloaded version Publication update history.

Use the GHG conversion factors guide to select and document the appropriate source rather than applying a current-year factor automatically.

What might one collection record look like?

This fictional electricity record illustrates a reproducible handover without inventing an emissions factor or claiming a compliant result.

Original fictional example; 12,500 kWh is an illustrative activity amount, not a sourced company figure.
FieldFictional entryReview point
MetricPurchased electricity activityKeep energy separate from emissions
BoundaryExample Components, Bristol workshopConfirm whether all relevant meters are covered
Period1–31 January 2026Check the billing interval
Actual amount12500 kWhPreserve the invoice unit
EvidenceINV-EXAMPLE-001Confirm source access
Calculation statusFactor pending; emissions not calculatedDo not display an invented zero-emissions result
Read the detailed guidance and evidence

If the reporting field requires MWh, the arithmetic conversion gives 12.5 MWh while the original 12,500 kWh remains in the evidence record.

An emissions calculation requires a separately selected, documented factor and should not be inferred from the energy total alone.

When can estimates and secondary data be used?

Under UK SRS S2’s Scope 3 framework, estimation and secondary data can support measurement, with judgement over the quality and relevance of inputs Paragraphs B38–B57.

Explain the estimateRequirements and evidence

Module 01 / 04

Approach

Describe the estimation or calculation method.

Read the detailed guidance and evidence

UK SRS S2 prioritises primary data with all else being equal and presumes Scope 3 can be estimated reliably using secondary data and industry averages Paragraphs B47 and B57.

The GHG Protocol’s Scope 3 guidance helps select methods according to the activity, available data and data quality Calculation guidance Calculation-method guidance.

A spend-based screening result and a supplier-specific activity result should retain their different method labels rather than appearing equally precise.

Which data-quality questions should reviewers ask?

Review whether data represents the activity and can be relied on rather than treating a completed cell as proof of quality Scope 3 Standard chapter 7.

Editorial review prompts informed by Scope 3 data-quality indicators, not a universal numeric scoring system.
Quality questionUseful checkPossible follow-up
TimeDoes the source represent the reporting period?Explain or replace a stale estimate
GeographyDoes it represent the relevant location?Assess a more relevant dataset
TechnologyDoes the method reflect the actual activity?Review the factor or proxy
CompletenessAre sites, months and records missing?Reconcile the coverage inventory
ReliabilityIs the input measured, estimated or unverified?Retain the method and supporting evidence
ConsistencyDid the definition change?Document and assess comparability
Read the detailed guidance and evidence

Prioritise meaningful gaps rather than asking every supplier for every possible field.

For VSME reporting, the current standard and cap need a separate assessment from the questions a legacy workbook happens to contain Articles 2–3 Template version notice.

How should collection checks be designed?

Use checks that expose real boundary, unit and coverage errors before approval rather than only testing whether cells contain numbers.

Check the meaningRequirements and evidence

Module 01 / 04

Coverage

Compare the submission against the expected site and period list.

Read the detailed guidance and evidence

A large movement may reflect a genuine operational change, so a flag should trigger review rather than silently replace the value.

Keep manual changes visible through a reason, author and date in the working record.

Official digital templates can provide validation but should still be checked for version and spreadsheet compatibility EFRAG tool notes.

What should the reporting handover contain?

Hand over the approved dataset with its dictionary, sources, calculations and unresolved issues so another person can review the report without rebuilding the process.

Original editorial handover checklist rather than a prescribed regulatory template.
Handover itemContentAcceptance question
Approved datasetValues, units, periods and statusesAre only approved records included?
DictionaryDefinitions, boundaries and methodsCan the recipient interpret each field?
Evidence indexStable source referencesCan authorised reviewers access records?
Calculation packFactors, transformations and assumptionsCan totals be reproduced?
Exception logMissing evidence and agreed treatmentAre open questions still visible?
Change logDefinition and method changesIs comparison with the prior year understandable?
Read the detailed guidance and evidence

The sustainability assurance guide explains why a prepared evidence pack is different from an independent assurance conclusion.

When comparing sustainability software, test whether these records can be exported together rather than only viewing them in a dashboard.

How do you make collection repeatable?

Keep definitions stable where appropriate, retain prior decisions and review changes before issuing the next request.

Improve the cycleRequirements and evidence

Module 01 / 04

Reuse

Start from the approved dictionary rather than a new questionnaire.

Read the detailed guidance and evidence

The GHG Protocol Corporate Standard’s consistency principle supports meaningful comparison over time Chapter 1.

For a report using the Voluntary Standard, its preparation principles address comparatives and reporting-period consistency Annex I paragraphs 14 and 18.

Keep collection controls proportionate to the information and risks rather than building an elaborate process that teams cannot maintain.

How do you run a collection cycle?

Use this editorial nine-step workflow as a practical starting point and adapt it to the actual reporting criteria.

  1. 101

    Identify the requirement

    Map the requested disclosure to its reporting purpose.
  2. 202

    Approve the dictionary

    Define the metric, boundary, period and unit.
  3. 303

    Assign responsibilities

    Name the evidence owner, preparer and reviewer.
  4. 404

    Issue the request

    Provide instructions and an example record.
  5. 505

    Collect the evidence

    Preserve source references and original units.
  6. 606

    Classify gaps

    Separate actual, zero, missing and estimated inputs.
  7. 707

    Calculate and reconcile

    Retain factors, transformations and coverage checks.
  8. 808

    Review and approve

    Resolve exceptions or document agreed treatment.
  9. 909

    Hand over and improve

    Export the dataset and evidence index and retain lessons.

Can you download an editable working resource?

This original preparation resource supports evidence and review and does not establish reporting conformity.

Download data register (CSV)

Editorial working resource, not a prescribed or government-approved form.
StepReview
AdaptSet the actual reporting basis, boundary, period and selected requirements
Retain evidenceConnect source records and judgements to each answer
ReviewResolve open issues before making the final reporting claim

Frequently asked

Questions people ask

What is the first step in ESG data collection?

Define the reporting purpose, metric, boundary, period and unit before requesting values.

Should missing values be recorded as zero?

No, use a separate missing status until evidence or an explicitly reviewed estimation method supports a value.

Must every Scope 3 input come directly from a supplier?

UK SRS S2 permits estimation using secondary data and industry averages and prioritises primary data with all else being equal.

Which conversion-factor year should be used?

Government guidance links the annual factor set to the activity-data period rather than simply the filing year.

Does software validation prove the data is correct?

No, completeness checks do not establish that boundaries, source records, units or methods were appropriate.

Is an evidence register the same as assurance?

No, it is a preparation control and does not provide an independent practitioner’s conclusion.

Sources

Primary sources

Primary provisions and official owner guidance checked on 26 October 2026; historical and draft resources are labelled in the guide.

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