| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| B M Scotland (1993) Ltd | 02574893 | 05/03/1994 | Dissolved |
| B M Scotland (1993) Ltd | 02574893 | 05/03/1994 | Dissolved |
| B M Scotland Ltd | 02688838 | 05/03/1994 | Dissolved |
| B M Scotland Ltd | 02688838 | 05/03/1994 | Dissolved |
| Rema Group Ltd | SC144533 | 21/05/1993 | Dissolved |
| Rema Group Ltd | SC144533 | 21/05/1993 | Dissolved |
| Serco Consultants Ltd | 02186483 | 01/12/1995 | Dissolved |
| Serco Consultants Ltd | 02186483 | 01/12/1995 | Dissolved |
| Tollway Ltd | 03070856 | 04/10/1995 | Dissolved |
| Tollway Ltd | 03070856 | 04/10/1995 | Dissolved |
| Vericom Ltd | 01775274 | 01/12/1995 | Dissolved |
| Vericom Ltd | 01775274 | 01/12/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BROWN & ROOT HIGHLANDS FABRICATORS LIMITED | SC049650 | 01/12/1989 | 27/03/1990 | Not Trading |
| Building Management Scotland Ltd | SC148972 | 05/03/1994 | 01/03/1996 | Dissolved |
| Building Management Scotland Ltd | SC148972 | 05/03/1994 | 01/03/1996 | Dissolved |
| Highlands Fabricators Pension Trustees Ltd | SC058346 | 01/12/1989 | 25/05/1990 | Dissolved |
| Highlands Fabricators Pension Trustees Ltd | SC058346 | 04/07/1989 | 25/05/1990 | Dissolved |
| MACGREGOR ENERGY SERVICES LIMITED | SC093962 | 26/06/1992 | 30/04/1993 | Dissolved |
| MACGREGOR SERVICES LIMITED | SC090880 | 28/02/1992 | 30/04/1993 | Dissolved |
| MACGREGOR SERVICES LIMITED | SC090880 | 28/02/1992 | 30/04/1993 | Dissolved |
| PETERHEAD FIELD WELD LIMITED | SC131760 | 28/02/1992 | 30/04/1993 | Insolvent |
| SERCO EUROPE LIMITED | 00451392 | 29/01/2000 | 31/12/2000 | Dissolved |
| SERCO INTERNATIONAL LIMITED | 02324094 | 03/02/2000 | 02/11/2000 | Silver |
| SERCO INTERNATIONAL LIMITED | 02324094 | 03/02/2000 | 31/12/2000 | Silver |
| SERCO LIMITED | 00242246 | 01/11/1995 | 06/11/1995 | Silver |
| SERCO LIMITED | 00242246 | 01/11/1995 | 06/11/1995 | Silver |
| SERCO REGIONAL SERVICES LIMITED | 01653016 | 01/12/1995 | 19/07/2000 | Amber |
| SERCO REGIONAL SERVICES LIMITED | 01653016 | 01/12/1995 | 19/07/2000 | Amber |
| Serco Defence F M Ltd | SC148509 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Defence F M Ltd | SC148509 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Inactive 2 Ltd | SC148913 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Inactive 2 Ltd | SC148913 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Management Services Ltd | SC148516 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Management Services Ltd | SC148516 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Services Ltd | SC145051 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Services Ltd | SC145051 | 05/03/1994 | 01/03/1996 | Dissolved |
| Serco Systems Ltd | 01861237 | 01/12/1995 | 06/05/1999 | Dissolved |
| Serco Systems Ltd | 01861237 | 06/11/1995 | 16/01/2001 | Dissolved |
| Serco Test Technology Ltd | 01413253 | 01/12/1995 | 24/03/1998 | Dissolved |
| Serco Test Technology Ltd | 01413253 | 01/12/1995 | 12/08/1999 | Dissolved |
| Traffic Information Services Ltd | 02429339 | 01/12/1995 | 01/06/1998 | Dissolved |
| Traffic Information Services Ltd | 02429339 | 01/12/1995 | 01/06/1998 | Dissolved |