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How verification works

Know what happens at each stage.

Our programme sets out how we agree an engagement, gather evidence, report findings and reach an independently reviewed conclusion. Here is what that means for your team.

The overview

Scope. Review. Verify.

  1. Agree the scope and fee

    We agree your reporting period, boundaries, the emissions to be covered, the assurance level and your deadline, then confirm the fee.

  2. Your free readiness review

    We review the information you already have, from part-year or last year’s data, months before your deadline. Your team gets private, documented feedback to act on at its own pace.

  3. Formal verification

    We verify the complete reporting period, an independent reviewer checks our work, and you receive your verification statement and findings report.

What you receive

Outputs you can use and understand.

A clear plan

An agreed scope, timetable, assurance level and fee, with responsibilities set out before work begins.

Free readiness review

Documented early findings and time to act on them. It is free when you commission verification and is not added to your fee.

Verification statement

A formal statement setting out what was verified, against which criteria and to what level of assurance, with a findings report to help you improve next year.

The final statement identifies the organisation, reporting period, criteria, scope, assurance level, material limitations and conclusion. A confirming conclusion is dependent on the evidence; it is never guaranteed.

For CDP disclosures, we also complete CDP’s verification letter, which confirms the boundary, emissions, period, standard, assurance opinion, provider and lead verifier for your response. Download a sample CDP verification letter (PDF)

The engagement in detail

A structured process, from enquiry to conclusion.

1. Pre-engagement review
We establish the inventory, intended use and requirements, then assess competence, independence, capacity and the timetable. We accept only where we can deliver the proposed work appropriately.
2. Written agreement
The agreement records scope, criteria, assurance level, materiality, responsibilities, outputs, dates and fees. It also explains the permitted use of verification statements and marks.
3. Planning
We assign an appropriate team, assess risks of material misstatement and plan evidence gathering. We explain what information and staff access we need, including any site work.
4. Free readiness review and verification
The free readiness review tests available information and records findings. Your organisation addresses them. Formal verification tests the completed period, later information and the resolution of earlier findings.
5. Independent review
Personnel not involved in the execution review whether the evidence and work support the proposed conclusion.
6. Decision and reporting
The decision follows the evidence and review. We explain the outcome and issue the appropriate reporting. All clients receive the final findings report.
7. Information after issue
If new information could materially affect the statement, we assess it and contact the client. A statement may need to be revised or withdrawn.

Responsibilities

A clear division of the work.

Our responsibility

Plan and perform the verification, assess evidence, document findings and report the conclusion. We explain what the relevant requirements mean for our findings.

Your responsibility

Prepare and own the inventory, make records and staff available, disclose relevant changes and implement corrections. You retain responsibility for external reporting.

Technical foundation

Reporting criteria, evidence and professional judgement.

We verify organisational GHG statements using ISO 14064-3. The programme is designed around the verification-body requirements of ISO/IEC 17029 and ISO 14065, with team competence assessed using ISO 14066. Our documented procedures cover competence, impartiality, independent review and the control of verification statements.

We consider materiality, uncertainty and the risk of misstatement when planning evidence gathering. Verification uses sampling and professional judgement; it does not provide absolute assurance that every figure is correct.

Limited and reasonable assurance · Remote activities · Standards and credentials

Accountability

Confidential records and a route for concerns.

We retain engagement records securely and treat client information under our confidentiality arrangements. The published policies explain how we handle impartiality, complaints and appeals.

Confidentiality policy · Impartiality policy · Appeals and complaints

Start with a 20-minute conversation.

You will talk to a verifier, not a salesperson. Tell us why you report, which scopes you need verified and when you need the statement, and ask whatever you need to. You do not need a finished inventory. If you go ahead, the person you speak to leads your verification.

No obligation, and no sales pitch