| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| MMO2 LIMITED | 04190833 | 17/06/2021 | Not Trading |
| O2 (EUROPE) LIMITED | 04247143 | 17/06/2021 | Silver |
| O2 (UK) LIMITED | 02012647 | 18/06/2021 | Not Trading |
| O2 INTERNATIONAL HOLDINGS LIMITED | 04247157 | 17/06/2021 | Dissolved |
| O2 OAK LIMITED | 03646040 | 17/06/2021 | Not Trading |
| O2 PINE LIMITED | 06281240 | 18/06/2021 | Not Trading |
| O2 WILLOW LIMITED | 06281241 | 18/06/2021 | Not Trading |
| O2 WORLDWIDE LIMITED | 09690368 | 23/03/2022 | Bronze |
| TELEFONICA DIGITAL LIMITED | 07884976 | 18/06/2021 | Amber |
| TELEFONICA GERMANY HOLDINGS LIMITED | 08202391 | 17/06/2021 | Silver |
| TELEFONICA O2 HOLDINGS LIMITED | 05310128 | 17/06/2021 | Silver |
| TELEFONICA O2 UK LIMITED | 04330394 | 18/06/2021 | Not Trading |
| TELEFONICA UK HOLDINGS LIMITED | 03722259 | 18/06/2021 | Not Trading |
| THE LINK STORES LIMITED | 03317483 | 18/06/2021 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|