| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CALL CONNECTIONS LIMITED | 02712995 | 19/11/2001 | 10/11/2009 | Dissolved |
| CELLPHONES DIRECT (INVESTMENTS) LIMITED | 03066790 | 19/11/2001 | 10/11/2009 | Dissolved |
| CELLPHONES DIRECT LIMITED | 02995222 | 19/11/2001 | 10/11/2009 | Dissolved |
| Cellphones Direct (Holdings) Ltd | 03065866 | 19/11/2001 | 10/11/2009 | Dissolved |
| DX COMMUNICATIONS (EDINBURGH) LIMITED | SC144905 | 19/11/2001 | 10/11/2009 | Dissolved |
| DX COMMUNICATIONS LIMITED | SC133682 | 19/11/2001 | 10/11/2009 | Amber |
| GENIE INTERNET LIMITED | 04330446 | 28/11/2001 | 10/11/2009 | Dissolved |
| GIFFGAFF LIMITED | 04196996 | 20/05/2002 | 10/11/2009 | Gold |
| LINK FS LIMITED | 03357545 | 15/09/2006 | 10/11/2009 | Dissolved |
| LUMINA HOLDINGS LIMITED | 02667014 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 (EUROPE) LIMITED | 04247143 | 19/11/2001 | 10/11/2009 | Silver |
| O2 (ONLINE) LIMITED | 01906156 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 (UK) LIMITED | 02012647 | 19/11/2001 | 10/11/2009 | Not Trading |
| O2 CEDAR LIMITED | 04678681 | 26/02/2003 | 10/11/2009 | Gold |
| O2 COMMUNICATIONS LIMITED | 04271548 | 11/09/2001 | 10/11/2009 | Amber |
| O2 CREDIT VOUCHERS LIMITED | 04273243 | 20/05/2002 | 10/11/2009 | Dissolved |
| O2 HOLDINGS LIMITED | 02604354 | 19/11/2001 | 10/11/2009 | Bronze |
| O2 INTERNATIONAL HOLDINGS LIMITED | 04247157 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 LIMITED | 04330445 | 28/11/2001 | 10/11/2009 | Dissolved |
| O2 MOBILES LIMITED | 02604355 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 NETWORKS LIMITED | 02604351 | 19/11/2001 | 10/11/2009 | Gold |
| O2 OAK LIMITED | 03646040 | 19/11/2001 | 10/11/2009 | Not Trading |
| O2 PINE LIMITED | 06281240 | 15/06/2007 | 10/11/2009 | Not Trading |
| O2 REDWOOD LIMITED | 02383186 | 19/11/2001 | 10/11/2009 | Amber |
| O2 SOLUTIONS LIMITED | 01814089 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 THIRD GENERATION | 03900219 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 TRANSACTIONS LIMITED | 02713001 | 19/11/2001 | 10/11/2009 | Dissolved |
| O2 WILLOW LIMITED | 06281241 | 15/06/2007 | 10/11/2009 | Not Trading |
| PACIFIC SHELF 873 LIMITED | SC198346 | 19/11/2001 | 10/11/2009 | Dissolved |
| SKY HOME COMMUNICATIONS LIMITED | 05262862 | 19/06/2006 | 10/11/2009 | Not Trading |
| TELEFONICA GLOBAL RESOURCES LIMITED | 02664011 | 19/11/2001 | 10/11/2009 | Dissolved |
| TELEFONICA O2 UK LIMITED | 04330394 | 28/11/2001 | 10/11/2009 | Not Trading |
| TELEFONICA UK LIMITED | 01743099 | 28/06/2002 | 10/11/2009 | Gold |
| THE MOBILE PHONE STORE LIMITED | 02837875 | 28/03/2003 | 10/11/2009 | Amber |
| VMED O2 SECRETARIES LIMITED | 04272689 | 19/11/2001 | 10/11/2009 | Amber |