| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 3S BUSINESS REVIEW LIMITED | 11926298 | 04/04/2019 | Gold |
| JOHN SPRINGATE ASSOCIATES LIMITED | 07207460 | 30/03/2010 | Dissolved |
| RED TEAM INFRASTRUCTURE SERVICES LIMITED | 07866688 | 01/12/2011 | Dissolved |
| RED TEAM MANAGEMENT LLP | OC370928 | 20/12/2011 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARUN YACHT CLUB LIMITED(THE) | 01549093 | 09/12/2005 | 21/07/2006 | Silver |
| Applied Geology (South Wasles) Ltd | 02678249 | 01/06/1996 | 02/08/2000 | Dissolved |
| Downfield Services Ltd | 02221557 | 01/06/1996 | 02/08/2000 | Dissolved |
| Johnson Filtration Systems Ltd | 02630493 | 01/06/1996 | 23/03/1998 | Dissolved |
| K H Associates Ltd | 02398190 | 01/06/1996 | 02/08/2000 | Dissolved |
| KENNEDY & DONKIN GENERATION & INDUSTRIAL LIMITED | 02060259 | 01/06/1996 | 02/08/2000 | Dissolved |
| KENNEDY & DONKIN POWER LIMITED | 01473204 | 01/06/1996 | 02/08/2000 | Dissolved |
| KENNEDY & DONKIN TRANSPORTATION LIMITED | 01615781 | 01/06/1996 | 02/08/2000 | Dissolved |
| Kennedy & Donkin Building Services Ltd | 02060238 | 01/06/1996 | 02/08/2000 | Dissolved |
| Kennedy & Donkin Overseas Ltd | 02058508 | 01/06/1996 | 02/08/2000 | Dissolved |
| Kennedy & Donkin Quality Engineering Ltd | 02060233 | 01/06/1996 | 02/08/2000 | Dissolved |
| Kennedy & Donkin Systems Control Ltd | 01578139 | 01/06/1996 | 02/08/2000 | Dissolved |
| Kennedy & Donkin Trustees Ltd | 02336148 | 01/06/1996 | 02/06/2000 | Dissolved |
| METRAIL CONSTRUCTION LIMITED | 06047478 | 11/11/2011 | 08/12/2011 | Silver |
| Maunsell Parsons Brinckerhoff Ltd | 02232027 | 28/06/1999 | 29/06/2000 | Dissolved |
| Metrail Constructtion Ltd | 06047452 | 10/01/2007 | 10/01/2007 | Dissolved |
| Mse Consulting Ltd | 05287622 | 01/10/2005 | 15/01/2007 | Dissolved |
| New Construction Services Ltd | 05699233 | 06/02/2006 | 15/01/2007 | Dissolved |
| New Infrastructure Services Group (Holdings) Ltd | 03716504 | 01/01/2006 | 01/06/2006 | Dissolved |
| PARSONS BRINCKERHOFF GROUP HOLDINGS LTD | 03515454 | 01/04/1998 | 05/06/2000 | Dissolved |
| PARSONS BRINCKERHOFF INVESTMENTS LIMITED | 03599313 | 30/10/1998 | 28/06/2000 | Dissolved |
| PARSONS BRINCKERHOFF OVERSEAS HOLDINGS LTD | 02678235 | 05/09/1997 | 02/08/2000 | Dissolved |
| PB LTD | 00656314 | 01/06/1996 | 05/06/2000 | Not Trading |
| PROXIME MANAGEMENT SERVICES LIMITED | 06361243 | 05/09/2007 | 25/02/2009 | Dissolved |
| Parsons Brinckerhoff (Europe) Ltd | 02887298 | 16/04/1999 | 26/07/2000 | Dissolved |
| Parsons Brinckerhoff Group Services Ltd | 03815592 | 12/10/1999 | 02/06/2000 | Dissolved |
| Pb Power Holdings Ltd | 02560063 | 04/07/1999 | 02/08/2000 | Dissolved |
| ROUGHTON (HOLDINGS) LIMITED | 02985638 | 05/03/2009 | 07/12/2010 | Dissolved |
| ROUGHTON INTERNATIONAL LIMITED | 02129938 | 05/03/2009 | 07/12/2010 | One Red Flag |
| RUST CONSULTING LIMITED | 02778272 | 01/06/1996 | 02/08/2000 | Dissolved |
| Roughton Uk Ltd | 03082898 | 05/03/2009 | 07/12/2010 | Dissolved |