# CHAS

A UK health-and-safety accreditation for contractors. CHAS-accredited businesses have had their health-and-safety policies and processes independently assessed.

- Type: Certification scheme
- Traders with a CHAS entry in the public data we track: 165
- Data collected up to: 27 Jun 2026
- Official register: https://www.chas.co.uk/
- Page: https://mytrustedtraders.com/certifications/chas

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

## Where holders are

- London: 15
- Cranbrook Kent: 8
- Southend-on-Sea Essex: 4
- Wolverhampton West Midlands: 4
- Southampton: 4
- Glossop Derbyshire: 3
- Manchester: 3
- Wilmslow Manchester: 3
- Rochester: 3
- Oldham Manchester: 3

## Trades that hold it

- Builder: 38
- Heating engineer: 27
- Landscaper: 18
- Electrician: 15
- Window / door fitter: 13
- Carpenter / joiner: 7
- Plumber: 7
- Security systems / CCTV: 7

## CHAS holders with review evidence

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

- **M B M Electrical Services Ltd**: electrician · London, Havering · 901 reviews. https://mytrustedtraders.com/traders/m-b-m-electrical-services-ltd
- **Blue A Ltd**: asbestos removal · West Drayton · 715 reviews. https://mytrustedtraders.com/traders/blue-a-ltd-9
- **Blue A Ltd**: asbestos removal · Hemel Hempstead · 666 reviews. https://mytrustedtraders.com/traders/blue-a-ltd-12
- **D A Dray & Sons Ltd**: electrician · Brighton · 512 reviews. https://mytrustedtraders.com/traders/d-a-dray-sons-ltd
- **Drain Division Ltd**: security systems · 464 reviews. https://mytrustedtraders.com/traders/drain-division-ltd-26
- **Tierney & Sons Electrical Ltd**: electrician · Hyde · 390 reviews. https://mytrustedtraders.com/traders/tierney-sons-electrical-ltd-2
- **Hardman Oakley Ltd**: carpenter · Eye, Ipswich · 343 reviews. https://mytrustedtraders.com/traders/hardman-oakley-ltd-2
- **Aspect Electrical Contractors Ltd**: electrician · Chichester, Portsmouth · 321 reviews. https://mytrustedtraders.com/traders/aspect-electrical-contractors-ltd
- **Celtic Property Maintenance Services Limited**: gardener landscaper · Cardiff · 279 reviews. https://mytrustedtraders.com/traders/celtic-property-maintenance-services-limited
- **Foxy Arboriculture Ltd**: gardener landscaper · London, Lewisham · 269 reviews. https://mytrustedtraders.com/traders/foxy-arboriculture-ltd
- **Centrona Gas**: hvac · Bromley Kent · 265 reviews. https://mytrustedtraders.com/traders/centrona-gas-plumbers-bromley
- **Centrona Gas**: hvac · Greenwich London · 265 reviews. https://mytrustedtraders.com/traders/centrona-gas-heating-engineers-and-gas-fitters-gre

## Common questions

### What is CHAS?

A UK health-and-safety accreditation for contractors. CHAS-accredited businesses have had their health-and-safety policies and processes independently assessed. (Certification scheme.)

### How many traders hold CHAS?

We track 165 traders with a CHAS entry, based on register and listing data collected up to 27 Jun 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 CHAS?

Check the official register at https://www.chas.co.uk/, or look the trader up on MyTrustedTraders. Profiles show the credentials we have found for them, alongside reviews and other public evidence.