| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CUBIC TRANSPORTATION SYSTEMS (ITMS) LIMITED | 08498086 | 22/04/2013 | 26/11/2013 | Dissolved |
| ENERGY, SAFETY AND RISK CONSULTANTS (UK) LIMITED | 07825532 | 27/10/2011 | 29/06/2012 | Amber |
| SERCO CORPORATE SERVICES LIMITED | 04007730 | 15/05/2012 | 17/11/2014 | Not Trading |
| SERCO HOLDINGS LIMITED | 03970268 | 08/10/2008 | 16/06/2016 | Silver |
| SERCO LEASING LIMITED | 03902874 | 06/10/2010 | 28/05/2012 | Dissolved |
| SERCO LEISURE OPERATING LIMITED | 04687478 | 20/09/2010 | 15/05/2012 | One Red Flag |
| SERCO MANCHESTER LEISURE LIMITED | 04222446 | 20/09/2010 | 15/05/2012 | Dissolved |
| SERCO NORTH AMERICA LIMITED | 06617598 | 11/06/2008 | 16/06/2016 | Dissolved |
| SERCO PUBLIC SERVICES LIMITED | 07946083 | 09/06/2012 | 14/08/2015 | Dissolved |
| SERCO-IAL LIMITED | 00427272 | 20/11/2008 | 15/05/2012 | Silver |