- ABB Steward
- Adtranz
- AELTC Wimbledon
- BAE
- BAM
- BMW
- Bovis Construction
- Bouygues
- Briggs and Forrester
- Cable & Wireless
- Cadbury
- Coventry University
- Eurocomm
- Foreman Roberts
- Galliford Try
- Grespania UK
- Grosvenor
- Hilton Building Services
- Hockley Building Services
- Honeywell
- Hyatt Hotels
- ISG plc
- Kew Gardens
- Mace
- Mansell Construction
- MITIE
- National Motorcyle Museum
- Network Rail
- N G Bailey
- O2
- Palace of Westminster
- Priory Mechanical Services
- Queens Tennis Club
- Rolls Royce
- Sainsbury
- Sir Robert McAlpine
- Stepway Building Services
- Sterling Thermal Technologies
- Sterling Power Group
- Skanska Rashleigh Weatherfoil
- Sunrise Senior Living
- Tolent Construction
- University of London
- Wates Construction