| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Cambridgeshire Custodial Services Ltd | 03931288 | 12/04/2000 | 11/05/2000 | Dissolved |
| KILMARNOCK PRISON SERVICES LIMITED | 03226951 | 05/11/1997 | 11/05/2000 | Amber |
| Kilmarnock Prison (Holdings) Ltd | 03443465 | 05/11/1997 | 11/05/2000 | Dissolved |
| LOWDHAM GRANGE PRISON SERVICES LIMITED | 03154430 | 28/10/1996 | 11/05/2000 | Amber |
| MEDOMSLEY TRAINING SERVICES LIMITED | 03488633 | 03/11/1998 | 11/05/2000 | Dissolved |
| MORETON PRISON SERVICES LIMITED | 03471077 | 06/09/1999 | 11/05/2000 | Bronze |
| Medomsley Holdings Ltd | 03488629 | 03/11/1998 | 11/05/2000 | Dissolved |
| Moreton Prison (Holdings) Ltd | 03471078 | 06/09/1999 | 11/05/2000 | Dissolved |
| PREMIER CUSTODIAL FINANCE LIMITED | 03849244 | 01/12/1999 | 11/05/2000 | Amber |
| PREMIER CUSTODIAL INVESTMENTS LIMITED | 03849142 | 01/12/1999 | 11/05/2000 | Bronze |
| PREMIER PRISON SERVICES LIMITED | 02733334 | 16/07/1992 | 11/05/2000 | Dissolved |
| PUCKLECHURCH CUSTODIAL SERVICES LIMITED | 03403669 | 04/06/1998 | 11/05/2000 | Amber |
| Premier Custodial Development Ltd. | 02867337 | 17/11/1993 | 01/01/2001 | Dissolved |
| Premier Custodial Group Ltd | 03849249 | 01/12/1999 | 11/05/2000 | Dissolved |
| Premier Detention Services Ltd | 03931282 | 12/04/2000 | 11/05/2000 | Dissolved |
| Premier Monitoring Services Ltd | 03522756 | 22/12/1998 | 11/05/2000 | Dissolved |
| Premier Training Services Ltd | 03488626 | 03/11/1998 | 11/05/2000 | Dissolved |
| SERCO GEOGRAFIX LIMITED | 03522659 | 22/12/1998 | 11/05/2000 | Dissolved |
| Serco Insurance Services Ltd | 03471126 | 04/06/1998 | 11/05/2000 | Dissolved |
| THE GEO GROUP UK LTD | 02878845 | 15/12/1993 | 01/01/2001 | Gold |