| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Applied Geology (South Wasles) Ltd | 02678249 | 14/09/1999 | Dissolved |
| Applied Geology (South Wasles) Ltd | 02678249 | 03/05/2002 | Dissolved |
| Downfield Services Ltd | 02221557 | 14/09/1999 | Dissolved |
| Downfield Services Ltd | 02221557 | 03/05/2002 | Dissolved |
| Forth Energy Limited | 02385904 | 18/05/1992 | Dissolved |
| K & D Certification Services Ltd | 02010715 | 14/09/1999 | Dissolved |
| K & D Certification Services Ltd | 02010715 | 03/05/2002 | Dissolved |
| K H Associates Ltd | 02398190 | 14/09/1999 | Dissolved |
| K H Associates Ltd | 02398190 | 03/05/2002 | Dissolved |
| Kennedy & Donkin Building Services Ltd | 02060238 | 14/09/1999 | Dissolved |
| Kennedy & Donkin Building Services Ltd | 02060238 | 03/05/2002 | Dissolved |
| Kennedy & Donkin Overseas Ltd | 02058508 | 14/09/1999 | Dissolved |
| Kennedy & Donkin Overseas Ltd | 02058508 | 03/05/2002 | Dissolved |
| Kennedy & Donkin Quality Engineering Ltd | 02060233 | 14/09/1999 | Dissolved |
| Kennedy & Donkin Quality Engineering Ltd | 02060233 | 03/05/2002 | Dissolved |
| Kennedy & Donkin Systems Control Ltd | 01578139 | 14/09/1999 | Dissolved |
| Kennedy & Donkin Systems Control Ltd | 01578139 | 03/05/2002 | Dissolved |
| Kennedy & Donkin Trustees Ltd | 02336148 | 14/09/1999 | Dissolved |
| Kennedy & Donkin Trustees Ltd | 02336148 | 03/05/2002 | Dissolved |
| Merz & McLellan Properties Ltd | 00123950 | 22/02/1992 | Dissolved |
| Merz & McLellan Services Ltd | 00496012 | 01/11/1991 | Dissolved |
| Merz Associates Ltd | 00659850 | 01/11/1991 | Dissolved |
| Merz Linton Ltd | 02937573 | 16/09/1994 | Dissolved |
| Merz Orchard Ltd | 00707372 | 10/08/1992 | Dissolved |
| Merz Orchard Ltd | 00707372 | 12/05/2004 | Dissolved |
| Merz Properties Limited | 02363191 | 21/11/1991 | Dissolved |
| Parsons Brinckerhoff (Europe) Ltd | 02887298 | 14/09/1999 | Dissolved |
| Parsons Brinckerhoff (Europe) Ltd | 02887298 | 03/05/2002 | Dissolved |
| Parsons Brinckerhoff Aviation Ltd | 04115247 | 12/02/2001 | Dissolved |
| Parsons Brinckerhoff Built Environment Ltd | 04022344 | 05/07/2000 | Dissolved |
| Parsons Brinckerhoff Group Services Ltd | 03815592 | 12/10/1999 | Dissolved |
| Parsons Brinckerhoff Infrastructure Ltd | 04022351 | 05/07/2000 | Dissolved |
| Parsons Brinckerhoff Programme Management Ltd | 03919454 | 05/07/2000 | Dissolved |
| Parsons Brinckerhoff Technologies Ltd | 04022334 | 05/07/2000 | Dissolved |
| RUST CONSULTING LIMITED | 02778272 | 14/09/1999 | Dissolved |
| RUST CONSULTING LIMITED | 02778272 | 03/05/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| KENNEDY & DONKIN (ASIA) LIMITED | 04091710 | 30/10/2000 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN (ASIA) LIMITED | 04091710 | 22/11/2004 | 23/11/2004 | Dissolved |
| KENNEDY & DONKIN GENERATION & INDUSTRIAL LIMITED | 02060259 | 14/09/1999 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN GENERATION & INDUSTRIAL LIMITED | 02060259 | 03/05/2002 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN LIMITED | 04103325 | 12/02/2001 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN LIMITED | 04103325 | 03/05/2002 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN POWER LIMITED | 01473204 | 14/09/1999 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN POWER LIMITED | 01473204 | 03/05/2002 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN TRANSPORTATION LIMITED | 01615781 | 14/09/1999 | 08/01/2010 | Dissolved |
| KENNEDY & DONKIN TRANSPORTATION LIMITED | 01615781 | 03/05/2002 | 08/01/2010 | Dissolved |
| MERZ AND MCLELLAN CONSULTING ENGINEERS LIMITED | 03246982 | 10/09/1996 | 08/01/2010 | Dissolved |
| MERZ AND MCLELLAN LIMITED | 03627022 | 12/10/1998 | 08/01/2010 | Dissolved |
| PARSONS BRINCKERHOFF CONSTRUCTORS LIMITED | 04022339 | 05/07/2000 | 08/01/2010 | Dissolved |
| PARSONS BRINCKERHOFF GROUP HOLDINGS LTD | 03515454 | 14/09/1999 | 08/01/2010 | Dissolved |
| PARSONS BRINCKERHOFF GROUP HOLDINGS LTD | 03515454 | 17/11/1999 | 19/06/2000 | Dissolved |
| PARSONS BRINCKERHOFF HOLDINGS LIMITED | 03640733 | 01/10/1998 | 08/01/2010 | Dissolved |
| PARSONS BRINCKERHOFF INVESTMENTS LIMITED | 03599313 | 14/09/1999 | 08/01/2010 | Dissolved |
| PARSONS BRINCKERHOFF LTD | 02554514 | 01/11/1991 | 08/01/2010 | Bronze |
| PARSONS BRINCKERHOFF OVERSEAS HOLDINGS LTD | 02678235 | 14/09/1999 | 08/01/2010 | Dissolved |
| PB FOUNDATION | 04381297 | 16/04/2003 | 08/01/2010 | Dissolved |
| PB LTD | 00656314 | 14/09/1999 | 08/01/2010 | Not Trading |
| PB POWER LTD | 04353230 | 12/03/2002 | 08/01/2010 | Dissolved |
| Parsons Brinckerhoff (Europe) Ltd | 02887298 | 10/03/1995 | 16/04/1999 | Dissolved |
| Pb Power Holdings Ltd | 02560063 | 19/11/1991 | 08/01/2010 | Dissolved |
| Pb Power Holdings Ltd | 02560063 | 18/01/2008 | 08/01/2010 | Dissolved |