# 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.

- Type: Certification scheme
- Traders with a TrustMark entry in the public data we track: 4,127
- Data collected up to: 17 Jul 2026
- Official register: https://www.trustmark.org.uk/
- Page: https://mytrustedtraders.com/certifications/trustmark

Counts reflect collected public entries, not official membership totals. Absence from this data does not mean a trader is unregistered.

## Where holders are

- London: 90
- Leeds: 29
- Manchester: 29
- Bristol: 25
- Colchester: 20
- Southampton: 20
- Enfield: 17
- Essex: 15
- Surrey: 15

## Trades that hold it

- Builder: 378
- Electrician: 377
- building services contractor: 288
- Surveyor: 267
- Window / door fitter: 100
- Roofer: 94
- Bricklayer / mason: 78
- building completion contractor: 43

## TrustMark holders with review evidence

A slice of holders that also have customer reviews on MyTrustedTraders. This is not the register itself.

- **RY Group**: New Malden · 2,340 reviews. https://mytrustedtraders.com/traders/ry-group-2
- **Applied Electrical Services Ltd**: electrician · Gosforth, Newcastle upon Tyne · 2,188 reviews. https://mytrustedtraders.com/traders/applied-electrical-services-ltd
- **A B Aerials**: security systems · Poole, Bournemouth · 1,400 reviews. https://mytrustedtraders.com/traders/a-b-aerials
- **PH247**: hvac · London, Hounslow · 1,351 reviews. https://mytrustedtraders.com/traders/ph247-14
- **Blossom Clean & Dry**: cleaner · Rayleigh · 1,115 reviews. https://mytrustedtraders.com/traders/blossom-clean-dry
- **MF Plastics Ltd**: window company · Coventry · 1,066 reviews. https://mytrustedtraders.com/traders/mf-plastics-ltd
- **Greenhome Heating Ltd**: hvac · Washington · 987 reviews. https://mytrustedtraders.com/traders/greenhome-heating-ltd
- **Trustmark Roofing And Building Limited**: roofer · Washington · 981 reviews. https://mytrustedtraders.com/traders/trustmark-roofing-and-building-limited-2
- **Eastleigh Services**: electrician · Eastleigh, Southampton · 956 reviews. https://mytrustedtraders.com/traders/eastleigh-services-2
- **Roofline Design (UK) Ltd**: roofer · Leeds · 929 reviews. https://mytrustedtraders.com/traders/roofline-design-uk-ltd
- **Advanced Glazing Systems Ltd**: window company · Cambridge Cambridgeshire · 854 reviews. https://mytrustedtraders.com/traders/advanced-glazing-systems-ltd-door-canopies-cambrid
- **Eco-Renewable Systems Ltd**: solar installer · Farnborough · 813 reviews. https://mytrustedtraders.com/traders/eco-renewable-systems-ltd-2

## 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 traders hold TrustMark?

We track 4,127 traders with a TrustMark entry, based on register and listing data collected up to 17 Jul 2026. This reflects the public entries 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.