Support Services |
| Aggreko |
| Ashtead |
| AssetCo* |
| Atkins |
| Babcock International |
| Cape |
| Capita |
| Connaught |
| DRS Data & Security Services* |
| Homeserve |
| Interserve |
| Latchways |
| Mears |
| MITIE |
| Mortice |
| Mouchel |
| Network Group* |
| Ricardo |
| RPS |
| Scott Wilson |
| Serco |
| Spice |
| Trifast* |
| White Young Green |
| WSP |