| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| JLN CONSULTING SERVICES LTD | 07591387 | 05/04/2011 | Dissolved |
| SALISBURY PLAIN ENTERPRISES LIMITED | 10180390 | 14/05/2016 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AECOM CORPORATION HOLDINGS (UK) LIMITED | 03039328 | 06/06/2003 | 30/04/2005 | Bronze |
| AECOM INFRASTRUCTURE & ENVIRONMENT UK LIMITED | 00880328 | 01/05/2000 | 11/07/2008 | Gold |
| BASING VIEW INVESTMENTS LTD | 03022390 | 06/06/2003 | 30/04/2004 | Insolvent |
| BRITISH EXPERTISE | 00896430 | 12/12/2002 | 14/12/2010 | Amber |
| BUILD IT INTERNATIONAL | 05495358 | 03/04/2014 | 11/07/2019 | Silver |
| GROUND SOLUTIONS GROUP LTD | 02036076 | 09/01/2003 | 02/01/2008 | Dissolved |
| HYDROGEOLOGICAL SERVICES INTERNATIONAL LIMITED | 02495374 | 14/05/2004 | 02/01/2008 | Dissolved |
| SALISBURY PLAIN ACADEMIES | 10163646 | 05/05/2016 | 22/09/2021 | Dissolved |
| SCOTT WILSON PAVEMENT ENGINEERING LTD | 01910469 | 28/11/1992 | 16/07/2004 | Dissolved |
| SCOTT WILSON PIESOLD LTD | 02894693 | 26/11/2002 | 02/01/2008 | Dissolved |