The Contractors Health and Safety Assessment Scheme
Welcome to the Contractors Health and Safety Assessment Scheme (CHAS). We are dedicated to completing health and safety pre-qualification assessments to a nationally recognised and accepted threshold standard

Recent Testimonials.

Freddie Tyne - Greens Decorating Contractors Ltd

"A high percentage of new business is generated through successful tenders. Over the years the number of lead contractors that make CHAS registration a prerequisite in the tendering stage has risen substantially.
One of our biggest customers accepts CHAS as an alternative to having to go through their own health and safety questionnaires. This allows us to streamline our tendering process to maximise the number of projects we can work on."

Tony Brown – T Brown Joiners

"With my company being small, the assessment works well for me, but also keeps me up to date with all my H&S. Without using CHAS, these things could get forgotten about, so could cost my company in contracts in the future."

Need help with your CHAS registration?

All of our assessors are friendly, qualified, competent Health & Safety officers who are committed to improving Health & Safety, and pride themselves in guiding companies in the right direction. Find out more or apply now

The fastest growing Health and Safety assessment scheme in the UK

With 670 buyer members and over 60,000 suppliers on its database, CHAS is not only the largest but also the fastest growing health and safety assessment scheme in the UK.
Read more

Engineers shaking hands

About CHAS

CHAS is established as the market leader for health and safety pre-qualification in the UK. It is available to suppliers (those who provide goods and services) and to organisations (buyers) looking for suitably competent suppliers.

CHAS is a founder member and past Chair of Safety Schemes in Procurement – Competence Forum or SSIP. Please go to or click here for full details.

Roofers at work


CHAS isn’t just for construction companies, it assesses health and safety for all types of suppliers, from care services to demolition contractors, designers and consultants. The aim of the scheme is to save time and resources by avoiding unnecessary duplication in the first stage of competence assessment; the CDM Core criteria.

Developer and foreman


Membership includes the public sectors: health trusts, emergency services and government departments and large private companies who have a supply chain, for example Royal Mail Group, Kier and Mitie Group. Ultimately we complete the initial H&S application process for buyers, saving time and resources for all involved in the process.

If you think you may be eligible please complete the request for buyer access form. A member of the CHAS team will make contact within three working days.

CDM 2007

Our scheme fully reflectss the stage one requirements of assessing competence under CDM 2007


Upcoming Events

CHAS will be exhibiting/attending the following events. Please do visit our stand and meet some of the team

March 2015

CIH South East Conference & Exhibition
The Brighton Centre - 3rd-5th

Excel, London – 3rd-5th

The Health & Safety Event Birmingham
NEC Birmingham – 24th-26th

Health and Safety Events

Norfolk Chamber of Commerce - Meet The Buyer Event
Norwich City Football Club - 19th

April 2015

Lancaster London Hotel - 20th


USHA Spring Conference
Bournemouth - 22nd-24th

May 2015

Kent 2020 Vision
Maidstone - 13th

June 2015

Safety & Health International
Excel London – 16th-18th
Safety and Health International

CIH Conference & Exhibition 2015
Manchester Central Exhibition Centre - 23rd-25th

LGA Conference
Harrogate - 30th-2nd

October 2015

The Build Show
NEC Birmingham – 6th-8th

Build Show

Health & Safety North
Bolton Arena – 7th-8th

Health and Safety Events

November 2015

HOMES 2015
London Olympia - 18th-19th