- Adenstar Developments Ltd
- Amec Capital Projects
- Amiri Construction Ltd
- Balfour Beatty
- Birse Construction Ltd
- Brazier Construction Ltd (Kier)
- Blustone PLC
- Cinnamond Contracts Ltd
- Raymond Brown Construction Ltd
- Brymor Construction Ltd
- Buxton Building Contractors Ltd
- Carillon Building
- Carlton Civil Engineerin
- Colas
| - Crispin & Borst Ltd
- Deeks & Steere PLC
- Dyer & Butler Ltd
- Euro Earthworks Ltd
- Farnrise Construction Ltd
- Fitzpatrick Contractors Ltd
- F L Beadle & Sons Ltd
- Geoffrey Osborne Ltd
- Graham Moyse Contractors Ltd
- HA & DB Kitchin Ltd
- Hampshire County Council
- Hargreaves Construction Ltd
- HGH Groundworks
- Jackson Ltd
| - John Reilly Construction Ltd
- John Stacey & Sons Ltd
- Kier Group
- Mansell Construction Services Ltd
- M J McCabe & Sons Ltd
- Macob (Southern) Ltd
- Mathews Civil Engineering Ltd
- Norwest Holst Ltd
- Portsmouth City Council
- P J Carey (Contractors) Ltd
- ROK Build Ltd
- S Devine Civil Engineering Ltd
- Trant Construction Ltd
- Waring Contractors Ltd
- Wilmott Dixon Construction Ltd
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