| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Bridge Street Holdings Ltd | 02179715 | 30/04/1999 | Dissolved |
| Mouncey & Partners Ltd | 00740331 | 30/04/1999 | Dissolved |
| Sema Outsourcing Plc | 02002981 | 01/02/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATOS INTERNATIONAL IT LIMITED | 01907841 | 30/04/1999 | 31/12/2001 | Silver |
| ATOS INVESTMENTS LIMITED | 04140467 | 01/02/2002 | 17/10/2002 | Silver |
| ATOS ORIGIN BARBADOS LIMITED | 02144824 | 19/04/1999 | 31/12/2001 | Dissolved |
| Computer Analysts & Programmers Ltd | 00723035 | 27/10/1992 | 11/09/2001 | Dissolved |
| Data Recovery Ltd | 02019782 | 01/02/2002 | 29/01/2004 | Dissolved |
| L H S Europe Ltd | 03114370 | 01/02/2002 | 29/01/2004 | Dissolved |
| Meridian Information Systems Ltd | 01672402 | 10/11/1998 | 01/09/2001 | Dissolved |
| Metra-Hos Ltd | 01782522 | 30/04/1999 | 06/09/2001 | Dissolved |
| SEMA CONSULTING LIMITED | 00949745 | 01/02/2002 | 29/01/2004 | Dissolved |
| SEMA INVESTMENT UK LIMITED | 04168291 | 01/02/2002 | 13/06/2003 | Silver |
| SEMA PARTNER 1 LIMITED | 04125843 | 01/02/2002 | 29/01/2004 | Dissolved |
| SEMA SYSTEMS LIMITED | 01417035 | 01/02/2002 | 29/01/2004 | Dissolved |
| SEMA-LHS (UK) LIMITED | 04106026 | 07/11/2000 | 01/09/2001 | Dissolved |
| Sema Atlanta Ltd | 04089345 | 01/02/2002 | 29/01/2004 | Dissolved |
| Sema Canada Ltd | 02767954 | 30/04/1999 | 01/09/2001 | Dissolved |
| Sema Mobile Communications Ltd | 00450335 | 01/02/2002 | 29/01/2004 | Dissolved |
| Sema Partner 2 Ltd | 04125837 | 01/02/2002 | 29/01/2004 | Dissolved |
| Sema Quest Trustee Ltd | 03871219 | 14/03/2000 | 18/02/2002 | Dissolved |
| Sema Us Ltd | 04089348 | 01/02/2002 | 29/01/2004 | Dissolved |
| Sema-Lhs (Europe Holdings) Ltd | 04106076 | 01/02/2002 | 29/01/2004 | Dissolved |
| Syntax Managed Services Ltd | 02442594 | 01/02/2002 | 13/06/2003 | Dissolved |
| YARROW LIMITED | 00121699 | 30/04/1999 | 01/09/2001 | Dissolved |