CLS-Build is associated and registered with a number of the UK’s leading construction bodies.


CLS is an approved security cleared organisation at Heathrow, Gatwick and Stansted Airport.

We are accredited with the below bodies in various sectors;

  • CHAS
  • Safe Contractor
  • ISO 9001
  • Environment Agency – Registered waste carriers
  • SIA
  • CAA
  • FORS – Bronze member for our fleet services.
  • FORS – Gold for our HGV and Plant partners.


Find out how CLS Build can help you with your Airside requirements.

CLS is a FORS Bronze member for its fleet vehicles.

Our tipper supplier partners are FORS Gold members.

Years Established

Completed Projects

Get a Quote For Your Project 

Where & how can we assist you?

Get in contact with CLS-Build to discuss your requirements and we will advise where we can help you with our range of services or a bespoke package to suit your project specific criteria.

Click the below SERVICES button to browse our range of further services that we can offer.

Contact Us

Head Office

Heathrow Cube,

First Floor, 9 Arkwright Road,

(Close to Heathrow Terminal 5)

Colnbrook, Berkshire

United Kingdom


+44 7497 092 417