| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Filtronic Reorganisation Ltd | 01315303 | 20/10/1991 | Dissolved |
| LIVE LINK PERFORMANCE ENGINEERING LLP | OC314684 | 14/05/2009 | Dissolved |
| Southern Power | 00387138 | 29/12/1990 | Dissolved |
| Suavefair Limited | 01875520 | 29/12/1991 | Dissolved |
| Trychange | 02029421 | 29/12/1990 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ADVENT LIMITED | 02191603 | 14/11/1991 | 16/02/1996 | Dissolved |
| ADVENT MANAGEMENT LIMITED | SC082734 | 03/01/1989 | 28/01/1996 | Dissolved |
| ADVENT NOMINEES LIMITED | 02051962 | 27/01/1992 | 16/02/1996 | Dissolved |
| ADVENT TRUSTEE LIMITED | 02308928 | 14/11/1991 | 16/02/1996 | Dissolved |
| Aflp Investments Fund Ltd | 03072874 | 07/09/1995 | 16/02/1996 | Dissolved |
| Aflp Investments Ltd | 03072910 | 20/07/1995 | 16/02/1996 | Dissolved |
| Anamartic Ltd | 02003143 | 07/09/1991 | 05/04/1994 | Dissolved |
| Aregon Group Ltd | 01749138 | 01/12/1991 | 01/12/1992 | Dissolved |
| CERILLION TECHNOLOGIES LIMITED | 03849601 | 02/03/2004 | 22/01/2008 | Silver |
| D C S GROUP TRUSTEES LIMITED | 03736918 | 31/03/1999 | 27/07/2006 | Dissolved |
| DCS AUTOMOTIVE HOLDINGS LIMITED | 05048856 | 12/03/2004 | 27/07/2006 | Dissolved |
| DENPLAN LIMITED | 01981238 | 25/12/1991 | 24/11/1993 | Gold |
| Dcs Quest Ltd | 03913731 | 06/10/2001 | 27/07/2006 | Dissolved |
| FIDESSA GROUP HOLDINGS LIMITED | 03234176 | 28/01/1997 | 26/04/2005 | Bronze |
| FILTRONIC PLC | 02891064 | 02/08/1994 | 17/10/1994 | Gold |
| FINASTRA UK LIMITED | 01841697 | 18/07/1991 | 14/04/1994 | Gold |
| Geocapital Ltd | 03389952 | 31/07/1997 | 25/04/2001 | Dissolved |
| IDN TELECOM LIMITED | 04041485 | 26/08/2004 | 22/01/2007 | Dissolved |
| MAISON BLANC LIMITED | 02707328 | 11/07/1995 | 31/12/1998 | Dissolved |
| REYNOLDS & REYNOLDS AUTOMOTIVE HOLDINGS LIMITED | 00237095 | 30/07/1996 | 27/07/2006 | Dissolved |
| SUNGARD DATA MANAGEMENT SOLUTIONS (UK) LIMITED | 01957749 | 19/02/1992 | 21/07/1998 | Dissolved |
| Scheduling Technology Group Ltd | 02069338 | 08/12/1991 | 29/09/1998 | Dissolved |
| Strategic Software Ltd | 01693711 | 24/06/1999 | 17/05/2001 | Dissolved |
| TOUCHPAPER SOFTWARE LIMITED | 01597931 | 27/09/1995 | 02/06/1997 | Dissolved |
| The Worshipful Co of Information Technologists Charitable Op | 05697772 | 04/02/2006 | 28/02/2007 | Dissolved |