| Organisation (Click to list alphabetically) | A | AA |
| Amey Plc | 100.00 | 100.00 |
| Ashsted Plant Hire | 100.00 | 100.00 |
| Bechtel Ltd | 100.00 | 100.00 |
| Cemex) | 100.00 | 100.00 |
| Edmund Nuttall Ltd | 100.00 | 100.00 |
| Fairview New Homes Ltd | 100.00 | 100.00 |
| Laing O'Rourke Plc | 100.00 | 100.00 |
| Portakabin Ltd | 100.00 | 100.00 |
| Shepherd Building Group Ltd | 100.00 | 100.00 |
| Skanska UK Plc | 99.20 | 100.00 |
| Persimmon plc | 99.02 | 100.00 |
| Barratt Developments Plc | 98.40 | 100.00 |
| Ardmore Construction Ltd | 97.96 | 100.00 |
| Wilson Bowden | 97.50 | 100.00 |
| Bovis Lend Lease | 96.88 | 100.00 |
| SIG plc | 96.88 | 100.00 |
| Morgan Sindall | 72.80 | 100.00 |
| Jewson Ltd | 67.20 | 100.00 |
| Halcrow Group | 47.20 | 98.40 |
| George Wimpey PLC | 43.75 | 100.00 |
| Balfour Beatty | 37.60 | 100.00 |
| Marshalls Plc | 24.00 | 100.00 |
| Tarmac Ltd | 22.22 | 100.00 |
| Lafarge Cement | 17.46 | 100.00 |
| Morrison Construction Services Ltd | 7.94 | 100.00 |
| Alfred McAlpine PLC | 7.87 | 100.00 |
| Crest Nicholson PLC | 7.41 | 100.00 |
| Houserate Ltd ( HANSON) | 5.60 | 98.40 |
| Mace | 4.00 | 100.00 |
| Carillion Plc | 3.97 | 100.00 |
| Kier Group plc | 2.40 | 100.00 |
| Faber Maunsell | 1.59 | 100.00 |
| J Murphy & Sons Ltd | 1.06 | 55.32 |
| Vinci Plc | 0.80 | 100.00 |
| Ainscough Crane Hire Ltd | 0.00 | 100.00 |
| Engineering Construction Industry Traini | 0.00 | 100.00 |
| Heywood Williams Group plc | 0.00 | 100.00 |
| MJ Gleeson Group plc | 0.00 | 100.00 |
| Mott MacDonald Group Ltd | 0.00 | 100.00 |
| Taylor Woodrow Construction Ltd | 0.00 | 100.00 |
| Arup | 0.00 | 92.25 |
| Berkeley Group plc | 0.00 | 68.22 |