| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A T & T (U K) Holdings Ltd | 02065090 | 22/12/1993 | Dissolved |
| AT&T ISTEL PENSION TRUSTEE LIMITED | 02352700 | 01/04/2015 | Not Trading |
| Viewtel Ltd | 00956355 | 15/08/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| A B C Travelbank Ltd | 02243432 | 01/01/1993 | 20/12/1999 | Dissolved |
| A Europe Middle East & Africa Ltd | 02571163 | 17/02/1995 | 28/09/1999 | Dissolved |
| A T & T (U K) Holdings Ltd | 02065090 | 08/08/1992 | 22/12/1993 | Dissolved |
| A T & T (U K) Holdings Ltd | 02065090 | 22/12/1993 | 22/12/1993 | Dissolved |
| AT&T (UK) | 01774561 | 23/10/1995 | 26/10/1999 | Dissolved |
| AT&T GLOBAL MARKETS (EMEA) | 03764804 | 30/04/1999 | 29/07/1999 | Dissolved |
| AT&T GLOBAL SERVICES | 03396030 | 26/06/1997 | 31/01/2000 | Dissolved |
| AT&T ISTEL | 03531467 | 31/03/1998 | 03/08/1999 | Silver |
| AVAYA UK | 03049861 | 14/12/1995 | 30/06/1996 | Bronze |
| Abbey Business Consultants Ltd | 01801334 | 01/01/1993 | 28/09/1999 | Dissolved |
| Ai Purchasing Systems Ltd | 02364477 | 01/01/1993 | 28/09/1999 | Dissolved |
| Aii Solutions Ltd | 02481630 | 19/04/1994 | 28/09/1999 | Dissolved |
| At&t Ltd | 01765868 | 01/08/1994 | 28/09/1999 | Dissolved |
| B L Systems Ltd | 02311424 | 24/04/1992 | 28/09/1999 | Dissolved |
| Belmin Systems Ltd | 02063854 | 21/04/1993 | 28/09/1999 | Dissolved |
| Computer Systems Development (C S D) Ltd | 02306428 | 24/04/1992 | 28/09/1999 | Dissolved |
| Csd (Uk) Ltd | 02147939 | 24/04/1992 | 28/09/1999 | Dissolved |
| Daton Systems Ltd | 01580918 | 11/07/1993 | 28/09/1999 | Dissolved |
| EASYLINK SERVICES (UK) LIMITED | 03739714 | 23/04/1999 | 14/01/2000 | Dissolved |
| Facilities Management Services Ltd | 02288595 | 09/03/1993 | 28/09/1999 | Dissolved |
| Inview | 02108123 | 30/06/1995 | 28/09/1999 | Dissolved |
| Istel Nominee Ltd | 02064549 | 05/08/1992 | 28/09/1999 | Dissolved |
| Letsi Ltd | 02961253 | 02/08/1995 | 28/09/1999 | Dissolved |
| Mycrom Computers Ltd | 01579918 | 12/10/1993 | 28/09/1999 | Dissolved |
| Softlab S I (U K) | 00412395 | 05/08/1992 | 01/04/1998 | Dissolved |
| Softlab S I (U K) | 00412395 | 22/12/1993 | 01/04/1998 | Dissolved |
| Viatel Global Communications Ltd | 02948988 | 23/10/1995 | 29/02/2000 | Dissolved |
| Viewtel Holdings Ltd | 02193691 | 30/06/1995 | 28/09/1999 | Dissolved |
| W P Associates Ltd | 01545778 | 23/10/1997 | 28/09/1999 | Dissolved |
| Worldxchange Communications Ltd | 02671855 | 15/04/1999 | 05/11/1999 | Dissolved |