| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Building Management Scotland Ltd | SC148972 | 01/04/2000 | Dissolved |
| PJH PROFESSIONAL SERVICES LTD | 09289629 | 31/10/2014 | Dissolved |
| Serco Defence F M Ltd | SC148509 | 01/04/2000 | Dissolved |
| Serco Inactive 2 Ltd | SC148913 | 01/04/2000 | Dissolved |
| Serco Ltd | NF003703 | 13/06/2003 | Dissolved |
| Serco Management Services Ltd | SC148516 | 01/04/2000 | Dissolved |
| Serco Services Ltd | SC145051 | 01/04/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CORNWELL MANAGEMENT CONSULTANTS PLC. | 02668512 | 17/05/2007 | 26/02/2010 | Dissolved |
| ER CONSULTANTS LTD. | 02420282 | 31/12/2007 | 02/05/2008 | Dissolved |
| Employment Relations Associates Ltd | 01834672 | 31/12/2007 | 05/09/2008 | Dissolved |
| Euromedic Ltd | 04210835 | 13/03/2002 | 08/02/2005 | Dissolved |
| Itnet Ltd | 03036256 | 07/03/2005 | 30/06/2006 | Dissolved |
| QUANTUM PLUS LIMITED | 03892061 | 17/05/2007 | 11/07/2007 | Gold |
| SERCO LEISURE OPERATING LIMITED | 04687478 | 21/07/2003 | 08/02/2005 | One Red Flag |
| SERCO LIMITED | 00242246 | 26/06/2000 | 09/06/2005 | Silver |
| SPECIALIST FLEET SERVICES LIMITED | 02843547 | 08/03/2002 | 31/07/2002 | Bronze |
| Serco Solutions Ltd | 00189075 | 03/02/2005 | 30/06/2006 | Dissolved |