ISO 14064-1
The organisation-level standard for quantifying and reporting GHG emissions and removals, alongside the GHG Protocol Corporate Standard. It is the reporting basis for most of the inventories we verify.
Standards and credentials
A recognised method. A documented process.
Our verification combines recognised standards with documented competence, independence and review arrangements. You can see how we work and what supports the conclusion in your statement.
Our technical foundation
Clear standards for the inventory and its verification.
ISO 14064-3
The standard we follow to plan and perform verification, evaluate evidence and reach a conclusion, with ISO 14064-5:2026 for remote verification.
Documented safeguards
Our programme addresses verification-body requirements through competence checks, conflict assessment, independent review and controlled reporting.
Our wider experience
Verification for a government-approved certification scheme.
We are the verification body behind a carbon certification scheme approved by the British Government and the Environment Agency following extensive consultation with businesses, the public sector and a wide range of environmental groups. This work adds to our experience of assessing organisational emissions inventories and their supporting evidence.
Verifier selection
What to assess in any verifier.
Whether or not a verifier is accredited, the same questions decide whether its opinion will stand up to scrutiny. These are the points we suggest checking before you appoint anyone, including us.
Methodology
Verification should follow ISO 14064-3 and test the inventory against the GHG Protocol or ISO 14064-1. Ask to see the verifier's method before you engage.
Remote verification
Remote verification is now standard for many engagements. Check that the verifier is experienced in remote work and follows ISO 14064-5:2026, the standard for remote verification of GHG statements.
Independence
A verifier that also sells methodology advice or consultancy cannot reliably give an opinion on the same work. Keep the people who help build your inventory separate from the people who verify it.
Sector experience
Ask for examples of verifications completed in your sector. Emissions sources, data and material risks differ markedly from one sector to another.
Who will do the work
The senior verifier you meet at the start is not always the person who leads and takes responsibility for your audit. Ask who will do the fieldwork and who will sign the opinion, and make sure you are comfortable with both. With us, the person you speak to first leads your verification.
Findings process
Ask how findings are documented, how disagreements are handled and what happens if the first submission does not meet the standard. Process matters as much as credentials.
Our position
What we verify, and what we do not.
Carbon Verification Limited does not verify emissions trading schemes or other mandatory compliance schemes. We add the most value in voluntary GHG reporting and assurance, where we have worked since 2007 across more than 20 sectors.
What we undertake
- Verification of organisational GHG inventories to ISO 14064-3
- Scope 3 and supply chain emissions verification
- Assurance of GHG figures in annual, sustainability and stakeholder reports
- Verification for customers, tenders and disclosure platforms
- Internal GHG programme assurance
- Free readiness reviews before formal verification
What we do not undertake
- UK Emissions Trading Scheme verification
- CORSIA verification for aircraft operators
- Building or preparing the inventories we verify
- Consultancy, software or offset sales
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