| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Serco Resource Management Ltd | 02213159 | 21/04/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARCADIS LLP | OC368843 | 23/11/2011 | 31/12/2023 | One Red Flag |
| Artel Services Ltd | 00346612 | 01/12/1993 | 18/04/1997 | Dissolved |
| Community Leisure Management Ltd | 02163239 | 21/04/1998 | 19/09/2001 | Dissolved |
| EEBEE PARTNERS LLP | OC304988 | 01/01/2008 | 19/12/2024 | Gold |
| HEALTH INNOVATION PARTNERS (BURTON) LIMITED | 09664152 | 17/07/2015 | 02/04/2019 | Dissolved |
| HEALTH INNOVATION PARTNERS (OXLEAS) LIMITED | 10841777 | 29/06/2017 | 02/04/2019 | One Red Flag |
| HEALTH INNOVATION PARTNERS LIMITED | 09663417 | 17/07/2015 | 02/04/2019 | Amber |
| LIBERATA UK LIMITED | 01238274 | 12/04/2002 | 24/03/2004 | Gold |
| New Century Group Ltd | 00225842 | 01/10/1996 | 18/04/1997 | Dissolved |
| Prime Contractors Ltd | 02378246 | 21/04/1998 | 19/09/2001 | Dissolved |
| SERCO LIMITED | 00242246 | 18/12/2000 | 29/01/2002 | Silver |
| SPECIALIST FLEET SERVICES LIMITED | 02843547 | 24/06/1997 | 26/11/2001 | Bronze |
| Serco Contracting Ltd | 02435848 | 21/04/1998 | 29/01/2002 | Dissolved |
| Serco Leisure Ltd | 02202587 | 21/04/1998 | 17/01/2002 | Dissolved |
| Sercoserve Ltd | 02497013 | 21/04/1998 | 29/01/2002 | Dissolved |
| Superbusy Ltd | 02533020 | 21/04/1998 | 20/08/2001 | Dissolved |
| THE NEW CENTURY CLEANING COMPANY LIMITED | 02672002 | 29/09/1993 | 14/11/1995 | Dissolved |
| ULTRA EVC LIMITED | 03021356 | 01/03/2014 | 09/10/2019 | Gold |
| Wood Green Leisure Ltd | 02659223 | 28/04/1997 | 29/01/2002 | Dissolved |
| Wood Green Leisure Ltd | 02659223 | 27/10/1998 | 29/01/2002 | Dissolved |