Our Accreditation's

We are very proud to hold accreditation's with some of the most well known bodies within our industry. Our accreditation's demonstrate our skill and ongoing commitment to quality and excellence and make us stand out against the crowd.

We have had to undergo vigorous and challenging assessment to first gain approval for these schemes and we have to continuously improve ourselves to remain accredited. Knowing this you can be sure that you receive a top level of service, workmanship and safety when you choose Complete Building Services.

Approved builders


Constructionline is the UK's largest Government-owned register of contractors and consultants for the construction industry. With over 8,000 key decision makers from over 2,000 buying organisations using Constructionline to select quality suppliers.


Gas Safe Register is the official gas registration body for the United Kingdom, Isle of Man and Guernsey, appointed by the relevant Health and Safety Authority for each area. By law all gas engineers must be on the Gas Safe Register.

Gas Safe Register replaced CORGI as the gas registration body in Great Britain and Isle of Man on 1 April 2009 and Northern Ireland and Guernsey on 1 April 2010.


The Federation of Master Builders (FMB) is the UK's largest trade association in the building industry.
It was etablished in 1941 to protect the interests of small and medium-sized building firms, the FMB is independent and non-profit-making, lobbying continuously for members’ interests at both national and local levels.

The FMB is a source of knowledge, professional advice and support for building firms right across the UK. The FMB also offers practical advice and support to the general public.


Exor provides flexible and responsive products that help reduce risk within the supply chain by implementing a rigorous programme of conformity within organisations, giving client peace of mind by verifying suppliers on a wide range of compliance issues including finance, health and safety, insurances, environmental, diversity and equality, certification and licencing obligations


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

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