- Highways Agency
- Birmingham City Council
- Brighton & Hove City Council
- Halton Borough Council
- National Car Parks
- The Mall Corporation
- British Land
- Interserve
- Birse Civils Ltd
- Prudential Property Portfolio Manager Limited
- Amec Civil Engineering Ltd
- Carillion Ltd
- Balfour Beatty Construction Ltd
- Amey Railways Ltd
- Railtrack
- London Underground
- Worcestershire County Council
- Gloucestershire County Council
- Scott Wilson
- Kingfisher Shopping Centre (Redditch)
- Norfolk County Council
- Neath Port Talbot County Borough
- Wrekin Construction Co Ltd
- Costain Civil Engineering Ltd
- Dean & Dyball Construction Ltd
- Ashridge Construction Ltd
- Coffey Construction Ltd
- Warwickshire County Council
