One discipline
Independent GHG verification is all we do. There is no consultancy arm, software product or certification network to fund, so every hour you pay for goes on verifying your inventory.
For you: no padding in the scope or the fee.
Why Carbon Verification
Good value by design, not by discount.
We are a specialist verifier with no other business to fund. That keeps our fees fair, our engagements quick and our attention on your data, without cutting corners on the evidence.
How we work
Four choices that keep verification efficient.
Good value in verification is not about doing less. It comes from how a practice is set up. These are the four choices behind ours.
Remote first
We follow ISO 14064-5:2026 for remote verification and visit sites only where it adds real evidence. Most of the work, such as testing data, calculations and boundaries, is done as thoroughly remotely.
For you: no travel costs and quicker scheduling.
Experience since 2007
We have verified inventories across more than 20 sectors, from FTSE-listed companies and NHS trusts to police forces and international charities. We know where inventories usually go wrong, so we know where to look first.
For you: quicker, sharper verification.
No compliance-market overhead
We work in voluntary reporting, not compliance schemes such as UK ETS or CORSIA. So our clients do not pay for the compliance-related infrastructure those schemes require and voluntary reporting does not.
For you: fees that reflect the work you need.
What you get
What that means in practice.
Free readiness review
When you commission verification, we start with a free, private review of the data you already have. It is not added to your fee.
No lock-in, fair renewals
You commit one year at a time. If your scope stays the same, your renewal fee rises by no more than CPI inflation. Some clients have stayed with us for almost two decades. Our renewal promise
Fixed fees, agreed up front
A tailored fixed fee for the agreed scope, not an hourly rate. If the scope changes materially, we discuss any change before doing extra work.
Engagements measured in days and weeks
A single-site verification with clean, well-documented data can be completed in days. Larger, multi-entity work is planned back from your deadline.
Specialist verifiers
Every member of the team is a GHG verification specialist, trained against ISO 14066 and up to date with the GHG Protocol revisions.
Independent judgement
Your inventory stays your responsibility. We test the evidence, an independent reviewer checks our work, and the conclusion follows the evidence.
Fair to stay
Price should never be the reason you leave.
Changing verifier costs your team far more than the fee. A new verifier has to learn your boundaries, methodology and data sources from scratch, and the questions start all over again. Most sustainability teams already spend more of their time on data than on sustainability. Changing verifier only adds to that footprint fatigue.
So we make staying easy. If your scope stays the same, your renewal fee rises by no more than CPI inflation. And if you have a written quotation from another verifier for the same scope, standard, assurance level and deliverables, we will match it.
Service should not be a reason to leave either. Verification is all we do, so it has all of our attention, and over 90% of our clients renew each year. Our renewal promise
Specialists, not generalists
What we do, and what we send elsewhere.
Being specialists means there is work we choose not to do. Where you need something outside our scope, we will tell you and point you in the right direction.
Where we add value
- Independent ISO 14064-3 verification of organisational GHG inventories
- Inventories prepared to the GHG Protocol or ISO 14064-1
- Scope 1, 2 and 3, across all 15 Scope 3 categories
- Multi-entity and multi-country inventories
- Verification for SECR, CDP, SBTi, PPN 006 and customer reporting
- A free readiness review before formal verification
What we send elsewhere
- UK ETS or CORSIA verification, which needs a UKAS-accredited body
- Validation of carbon credit projects for registries such as Verra or Gold Standard
- Building your inventory, which would compromise our independence
- Reduction strategy, net zero pathways or target-setting advice, for the same reason
- ISO 9001, ISO 14001 or other management system certification
- Emissions accounting software: we verify what your team produces, whatever platform it uses
Relevant experience
An accepted standard and documented expertise.
For CDP disclosures, we verify ISO 14064-1 organisational footprints in accordance with ISO 14064-3, a verification standard accepted by CDP. Our verification statements have been accepted in previous CDP disclosures.
We are also 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 environmental groups. Our published programme explains how we manage competence, independence and review.
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