Specialists in public sector construction and fire safety solutions


Integrated Services

Diamond Build Group plc is a family of integrated businesses founded by John Gray in 1977. The group consists of Diamond Build plc, Diamond Fire Safety Ltd and Diamond Special Works Ltd.

Diamond Build is the major works division of the group. It has been trading since 1977 and has helped to deliver thousands of schemes across London and the Home Counties. Diamond Fire Safety was set up in 2010 to help our local authority clients make their properties fire compliant. Diamond Fire Safety is now a leading organisation in the industry recognised for its professionalism, awards and accreditations keeping at the forefront of legislation to ensure the utmost safety of the end user and peace of mind for the client.

Diamond Special Works was established in 2015 to continue providing the necessary works of smaller value for our clients as Diamond Build focussed on larger value contracts. This was the heritage of Diamond Build and provides an opportunity to support our local community by employing specialist trades people from the area.


We have gained a wide range of industry accreditations which reflect our commitment to following best practice and achieving the highest standards across all sectors.




We are always on the lookout for new recruits to join our team that have the drive and ambition to be successful.

We are always looking for new trainee recruits to develop through our academy and into the industry. We have a wealth of experience developing a trainee’s knowledge, skills and competences using hands-on experience in which ever field has been selected. All trainees are allocated a mentor to ensure and monitor their safety and wellbeing through the scheme.


Quality subcontractors are paramount to our business. It is our policy only to use the subcontractors at contractor stage who have helped at precontract stage. Our specialist and restricted list of appointed contractors include those with a demonstrated history of the highest standard of health and safety and a proven track record of high-quality workmanship that can demonstrate excellent value for money. It is important to work closely with our subcontractors so that they can work efficiently and ensure that we can keep our pricing as cost effective as possible. If this describes your business, we would love to hear from you.


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