| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Mercury Callpoint Ltd | 02285350 | 07/02/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRENTSIDE COMMUNICATIONS LIMITED | 01991595 | 31/12/1992 | 06/09/1993 | Not Trading |
| Broadband Ltd | 03770850 | 05/08/1999 | 16/01/2001 | Dissolved |
| CABLE & WIRELESS COMMUNICATIONS DATA NETWORK SERVICES LIMITED | 02070812 | 06/01/1993 | 06/09/1993 | Not Trading |
| CABLE & WIRELESS COMMUNICATIONS DATA NETWORK SERVICES LIMITED | 02070812 | 13/01/1993 | 01/02/1993 | Not Trading |
| COGENT COMMUNICATIONS UK LTD | 04014628 | 09/06/2000 | 13/11/2001 | Bronze |
| Cable & Wireless Communications (Enterprises) Ltd | 02690741 | 25/02/1993 | 06/09/1993 | Dissolved |
| Cable & Wireless Communications Link 7500 Ltd | 01715022 | 13/01/1993 | 01/02/1993 | Dissolved |
| FIRSTMARK COMMUNICATIONS LIMITED | 03612789 | 14/06/1999 | 16/01/2001 | Dissolved |
| Firstmark Communications (U K) Ltd | 04066691 | 01/09/2000 | 19/01/2001 | Dissolved |
| Firstmark Communications Services Europe Ltd | 03525034 | 19/03/1998 | 22/07/1999 | Dissolved |
| Firstmark Communications Services Europe Ltd | 03525034 | 19/03/1998 | 19/01/2001 | Dissolved |
| INTER-CITY PAGING LIMITED | 01643672 | 06/11/1992 | 06/09/1993 | Dissolved |
| Mercury Facsimile Services Limited | 02384010 | 15/03/1993 | 06/09/1993 | Dissolved |
| Prelink Ltd | 02654902 | 17/10/1992 | 06/09/1993 | Dissolved |
| Prelink Ltd | 02654902 | 13/01/1993 | 01/02/1993 | Dissolved |
| THE CALLCENTRE SERVICE LIMITED | 02086507 | 27/02/1993 | 08/09/1993 | Dissolved |
| THE CALLCENTRE SERVICE LIMITED | 02086507 | 29/03/1993 | 05/04/1993 | Dissolved |
| V BAND LIMITED | 01855636 | 06/01/1993 | 06/09/1993 | Not Trading |
| V BAND LIMITED | 01855636 | 13/01/1993 | 01/02/1993 | Not Trading |
| VODAFONE M.C. MOBILE SERVICES LIMITED | 01457704 | 31/12/1992 | 05/04/1993 | Dissolved |
| VODAFONE M.C. MOBILE SERVICES LIMITED | 01457704 | 29/03/1993 | 06/09/1993 | Dissolved |
| WISHPLATE LIMITED | 01700078 | 21/10/1992 | 28/12/1992 | Dissolved |
| Worldxchange Communications Ltd | 02671855 | 03/01/1994 | 07/03/1996 | Dissolved |