| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ACHISOMOCH AID COMPANY LIMITED | 01422574 | 06/09/2019 | Silver |
| CHINUCH 20 | 10753661 | 04/05/2017 | Silver |
| Genetic Tools Modelling Limited | 02710804 | 29/04/1993 | Dissolved |
| T-Strategy Ltd | 04850080 | 29/07/2003 | Dissolved |
| Viatel Communications (U K) Ltd | 03243408 | 29/08/1996 | Dissolved |
| XC TECHNOLOGY HOLDINGS LTD | 12127300 | 29/10/2019 | Silver |
| XCONNECT GLOBAL NETWORKS LIMITED | 05365669 | 15/02/2005 | Dissolved |
| XCONNECT SERVICES LIMITED | 06011610 | 28/11/2006 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 121 COMMS CARRIER SERVICES LTD | 12113800 | 19/07/2019 | 21/06/2021 | Bronze |
| Destia Communications (Holdings) Ltd | 03706293 | 19/05/1999 | 01/02/2000 | Dissolved |
| Destia Communications Ltd | 03802010 | 21/07/1999 | 01/02/2000 | Dissolved |
| Destia Communications Ltd | 03802010 | 21/07/1999 | 01/02/2000 | Dissolved |
| Econophone Ltd | 03525851 | 12/03/1998 | 01/02/2000 | Dissolved |
| TELCO GLOBAL DISTRIBUTION LIMITED | 04353844 | 25/01/2002 | 05/07/2002 | Dissolved |
| TELCO GLOBAL DISTRIBUTION LIMITED | 04353844 | 25/01/2002 | 03/06/2003 | Dissolved |
| TELCO GLOBAL LIMITED | 04222886 | 18/06/2001 | 05/07/2002 | Not Trading |
| TELCO GLOBAL LIMITED | 04222886 | 18/06/2001 | 03/06/2003 | Not Trading |
| TELCO GLOBAL NETWORKS LIMITED | 04214792 | 19/06/2001 | 05/07/2002 | Dissolved |
| TELCO GLOBAL NETWORKS LIMITED | 04214792 | 19/06/2001 | 03/06/2003 | Dissolved |
| TELCO HOLDINGS LIMITED | 04219971 | 18/06/2001 | 05/07/2002 | Gold |
| TELCO HOLDINGS LIMITED | 04219971 | 18/06/2001 | 03/06/2003 | Gold |
| Viatel Communications (U K) Ltd | 03243408 | 29/08/1996 | 01/02/2000 | Dissolved |
| WAVETECH LIMITED | 01928844 | 31/08/2001 | 25/10/2002 | Dissolved |
| WAVETECH LIMITED | 01928844 | 07/06/1999 | 01/02/2000 | Dissolved |