| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 2SERVE (St Peter's) Ltd | 02911027 | 06/11/1995 | 01/09/1996 | Dissolved |
| Building Management Scotland Ltd | SC148972 | 01/03/1996 | 01/09/1996 | Dissolved |
| Community Leisure Management Ltd | 02163239 | 01/01/1996 | 01/09/1996 | Dissolved |
| Euroserv Ltd | 01562858 | 01/10/1994 | 06/11/1995 | Dissolved |
| I A L Ltd | 01630799 | 01/09/1994 | 13/11/1996 | Dissolved |
| International Aeradio Consultancy Services Ltd | 00952762 | 01/09/1994 | 13/11/1996 | Dissolved |
| International Aeradio Ltd | 01485659 | 01/09/1994 | 13/11/1996 | Dissolved |
| Prime Contractors Ltd | 02378246 | 01/01/1996 | 01/09/1996 | Dissolved |
| SERCO EUROPE LIMITED | 00451392 | 01/09/1994 | 01/09/1996 | Dissolved |
| SERCO INTERNATIONAL LIMITED | 02324094 | 01/09/1994 | 13/11/1996 | Silver |
| SERCO-IAL LIMITED | 00427272 | 01/09/1994 | 13/11/1996 | Silver |
| SPECTRUM RESOURCES LIMITED | 02236114 | 09/11/1990 | 29/11/1990 | Dissolved |
| Serco Aviation Services Ltd | 01538157 | 01/09/1994 | 13/11/1996 | Dissolved |
| Serco Contracting Ltd | 02435848 | 01/01/1996 | 01/09/1996 | Dissolved |
| Serco Defence F M Ltd | SC148509 | 01/03/1996 | 01/09/1996 | Dissolved |
| Serco Development Services Ltd | 00592499 | 01/09/1994 | 13/11/1996 | Dissolved |
| Serco Education Ltd | 02109225 | 01/09/1994 | 01/09/1996 | Dissolved |
| Serco Facilities Management Ltd | 02517692 | 06/11/1995 | 01/09/1996 | Dissolved |
| Serco Field Services Ltd | 02050174 | 13/03/1996 | 01/09/1996 | Dissolved |
| Serco Field Services Ltd | 02050174 | 13/03/1996 | 04/03/1997 | Dissolved |
| Serco Government Central Services Ltd | 02756646 | 06/11/1995 | 01/09/1996 | Dissolved |
| Serco Health Services Ltd | 02478475 | 06/11/1995 | 01/09/1996 | Dissolved |
| Serco Inactive 1 Ltd | 02269522 | 01/09/1994 | 01/09/1996 | Dissolved |
| Serco Inactive 2 Ltd | SC148913 | 01/03/1996 | 01/09/1996 | Dissolved |
| Serco Inactive 4 Ltd | 00850447 | 01/09/1994 | 13/11/1996 | Dissolved |
| Serco International Fire Training Centre Ltd | 01563367 | 01/09/1994 | 13/11/1996 | Dissolved |
| Serco Leisure Ltd | 02202587 | 01/01/1996 | 01/09/1996 | Dissolved |
| Serco Management Services Ltd | SC148516 | 01/03/1996 | 01/09/1996 | Dissolved |
| Serco Operations Ltd | 01858592 | 06/11/1995 | 01/09/1996 | Dissolved |
| Serco Quality & Safety Services Ltd | 02475633 | 06/11/1995 | 01/09/1996 | Dissolved |
| Serco Resource Management Ltd | 02213159 | 06/11/1995 | 01/09/1996 | Dissolved |
| Serco Services Ltd | SC145051 | 01/03/1996 | 01/06/1996 | Dissolved |
| Serco Skysafe Limited | 02496715 | 06/11/1995 | 01/09/1996 | Dissolved |
| Sercoserve Ltd | 02497013 | 01/01/1996 | 01/09/1996 | Dissolved |
| Superbusy Ltd | 02533020 | 06/11/1995 | 01/09/1996 | Dissolved |