| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| KENNEDY & DONKIN LIMITED | 04103325 | 19/01/2010 | Dissolved |
| MERZ AND MCLELLAN LIMITED | 03627022 | 19/01/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATKINSRÉALIS UK INTERNATIONAL LIMITED | 01091953 | 27/01/2003 | 05/08/2004 | Silver |
| BALFOUR BEATTY MANAGEMENT LIMITED | 04590162 | 03/08/2009 | 31/10/2013 | Not Trading |
| HEERY INTERNATIONAL LIMITED | 02759565 | 03/08/2009 | 11/06/2014 | Dissolved |
| KENNEDY & DONKIN GENERATION & INDUSTRIAL LIMITED | 02060259 | 19/01/2010 | 31/10/2013 | Dissolved |
| KENNEDY & DONKIN POWER LIMITED | 01473204 | 19/01/2010 | 31/10/2013 | Dissolved |
| KENNEDY & DONKIN TRANSPORTATION LIMITED | 01615781 | 10/11/2010 | 11/09/2014 | Dissolved |
| MERZ AND MCLELLAN CONSULTING ENGINEERS LIMITED | 03246982 | 19/01/2010 | 31/10/2013 | Dissolved |
| PARSONS BRINCKERHOFF GROUP HOLDINGS LTD | 03515454 | 19/01/2010 | 31/10/2013 | Dissolved |
| PARSONS BRINCKERHOFF HOLDINGS LIMITED | 03640733 | 19/01/2010 | 04/06/2013 | Dissolved |
| PARSONS BRINCKERHOFF INVESTMENTS LIMITED | 03599313 | 19/01/2010 | 31/10/2013 | Dissolved |
| PARSONS BRINCKERHOFF LTD | 02554514 | 19/01/2010 | 04/06/2013 | Bronze |
| PARSONS BRINCKERHOFF OVERSEAS HOLDINGS LTD | 02678235 | 19/01/2010 | 31/10/2013 | Dissolved |
| PB FOUNDATION | 04381297 | 19/01/2010 | 31/10/2013 | Dissolved |
| PB LTD | 00656314 | 19/01/2010 | 04/06/2013 | Not Trading |
| PB POWER LTD | 04353230 | 19/05/2010 | 31/10/2013 | Dissolved |
| Pb Power Holdings Ltd | 02560063 | 14/01/2010 | 14/01/2010 | Dissolved |