TrustMark
The UK government-endorsed quality scheme for work in and around the home. TrustMark-registered businesses are vetted for technical competence, customer service and trading practices.
Verify on the official register →
Based on public register and directory records collected up to 6 Jul 2026. Not an official membership count.
Check a specific trader
Thinking of hiring someone? Confirm their current TrustMark status on the official register, then run their name through our Cowboy Checker to see their reviews, credentials and company record in one place.
Where TrustMark holders are
- UK
- GB
- Surrey
- London
- Kent
- Essex
- Devon
- West Yorkshire
- Leicestershire
- Hampshire
Trades that hold it
Builder · 407Building Services Contractor · 283Surveyor · 267Electrician · 189Window / Door Fitter · 91Roofer · 71Building Completion Contractor · 43Plumber · 26Specialist Construction Contractor · 25
TrustMark holders with review evidence
These businesses hold a current TrustMark record and have customer reviews we can show — a small slice of all holders, not the register itself.
Common questions
What is TrustMark?
The UK government-endorsed quality scheme for work in and around the home. TrustMark-registered businesses are vetted for technical competence, customer service and trading practices. (Certification scheme.)
How many tradespeople hold TrustMark?
We track 3,683 tradespeople with a TrustMark record, based on register and listing data collected up to 6 Jul 2026. This reflects the public records we have collected, not necessarily the scheme's complete membership.
How do I check whether a specific trader holds TrustMark?
Check the official register at https://www.trustmark.org.uk/, or look the trader up on MyTrustedTraders — profiles show the credentials we have found for them, alongside reviews and other public evidence.
Keep checking
All certificationsCowboy CheckerCompany Health CheckCredential Guide by trade
We show what the public records say, with dates — a listing here is not an endorsement, and absence from our data does not mean a trader is unregistered. Always confirm current status with the scheme before you hire.