| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Euroserv Ltd | 01562858 | 12/03/1994 | 06/11/1995 | Dissolved |
| I A L Ltd | 01630799 | 12/03/1994 | 06/11/1995 | Dissolved |
| INFOTERRA LIMITED | 02359955 | 17/03/1994 | 06/10/1995 | Dissolved |
| International Aeradio Consultancy Services Ltd | 00952762 | 12/03/1994 | 06/11/1995 | Dissolved |
| International Aeradio Ltd | 01485659 | 12/03/1994 | 06/11/1995 | Dissolved |
| SERCO EUROPE LIMITED | 00451392 | 12/03/1994 | 06/11/1995 | Dissolved |
| SERCO INTERNATIONAL LIMITED | 02324094 | 12/03/1994 | 31/12/1995 | Silver |
| SERCO LIMITED | 00242246 | 18/12/1992 | 05/03/1994 | Silver |
| SERCO-IAL LIMITED | 00427272 | 30/04/1992 | 30/01/1997 | Silver |
| Serco Aviation Services Ltd | 01538157 | 12/03/1994 | 06/11/1995 | Dissolved |
| Serco Development Services Ltd | 00592499 | 12/03/1994 | 12/03/1994 | Dissolved |
| Serco Education Ltd | 02109225 | 12/03/1994 | 06/11/1995 | Dissolved |
| Serco Inactive 1 Ltd | 02269522 | 20/04/1993 | 06/11/1995 | Dissolved |
| Serco Inactive 4 Ltd | 00850447 | 12/03/1994 | 06/11/1995 | Dissolved |
| Serco International Fire Training Centre Ltd | 01563367 | 12/03/1994 | 06/11/1995 | Dissolved |
| Serco Southall Services Ltd | 02054685 | 05/05/1994 | 05/05/1997 | Dissolved |