| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| O'BRIEN-KREITZBERG & ASSOCIATES LIMITED | 02899945 | 24/11/2008 | Dissolved |
| URS VERIFICATION LIMITED | 04239978 | 24/11/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AECOM CORPORATION HOLDINGS (UK) LIMITED | 03039328 | 20/10/2010 | 10/11/2011 | Bronze |
| AECOM INFRASTRUCTURE & ENVIRONMENT UK LIMITED | 00880328 | 20/10/2010 | 10/11/2011 | Gold |
| BENAIM (UK) LTD | 01679637 | 24/11/2010 | 10/11/2011 | Dissolved |
| DAMES & MOORE LIMITED | 02223084 | 24/11/2008 | 10/11/2011 | Dissolved |
| THORBURN COLQUHOUN HOLDINGS LIMITED | SC085696 | 24/11/2008 | 10/11/2011 | Not Trading |
| URS CORPORATION LIMITED | SC118271 | 04/12/2008 | 10/11/2011 | Gold |
| URS EUROPE LIMITED | 03678568 | 24/11/2008 | 10/11/2011 | Silver |
| WOODWARD-CLYDE LIMITED | SC136353 | 24/11/2008 | 10/11/2011 | Dissolved |