| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NOVOCOMMS LIMITED | 11858804 | 04/03/2019 | One Red Flag |
| NOVOCOMMS SPACE AND DEFENCE LIMITED | 15969143 | 20/09/2024 | Amber |
| NOVOCOMMS SPACE LIMITED | 15499397 | 18/02/2024 | Amber |
| OXHILL AVIATION LIMITED | 05279182 | 05/11/2004 | Silver |
| SMART ANTENNA TECHNOLOGIES LIMITED | 08482911 | 10/09/2013 | Dissolved |
| UNIPHY LIMITED | 10003458 | 01/10/2016 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATLAS TOWER GROUP LIMITED | 11413610 | 20/12/2018 | 20/12/2019 | One Red Flag |
| HUTCHISON 3G UK HOLDINGS LIMITED | 03918124 | 03/09/2001 | 01/01/2007 | Bronze |
| HUTCHISON 3G UK LIMITED | 03885486 | 03/09/2001 | 01/01/2007 | Bronze |
| HUTCHISON WESTMINSTER LIMITED | FC027121 | 02/11/2006 | 01/01/2007 | Dissolved |
| MONITISE LIMITED | 06011822 | 07/06/2007 | 23/10/2015 | Insolvent |
| MORSE LIMITED | 03108179 | 01/04/2000 | 28/06/2007 | Dissolved |
| ORANGE HOLDINGS (UK) LIMITED | 02412603 | 14/03/1994 | 23/07/1999 | Dissolved |
| ORANGE INTERNATIONAL LIMITED | 03856936 | 01/11/1999 | 11/02/2000 | Not Trading |
| ORANGE LIMITED | 03110666 | 23/02/1996 | 14/04/2000 | Dissolved |
| ORANGE PERSONAL COMMUNICATIONS SERVICES LIMITED | 02178917 | 02/07/1992 | 23/07/1999 | Not Trading |
| Orange Austria Ltd | 03415758 | 23/07/1999 | 11/02/2000 | Dissolved |
| Orange Holdings Ltd | 03141367 | 23/07/1999 | 11/02/2000 | Dissolved |
| Orange Overseas Holdings | 03365768 | 01/04/1999 | 11/02/2000 | Dissolved |
| REMCARE LTD. | 06817462 | 28/05/2009 | 13/08/2012 | Dissolved |
| THE FEDERATION OF COMMUNICATION SERVICES LIMITED | 02749617 | 13/03/1996 | 30/04/1997 | Gold |
| TTP COMMUNICATIONS LIMITED | 03962172 | 04/09/2000 | 28/07/2006 | Silver |
| UK OIL & GAS PLC | 05299925 | 17/10/2006 | 18/06/2007 | Amber |