| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CPW BROADBAND SERVICES (UK) LIMITED | 06016123 | 27/02/2018 | Dissolved |
| CPW UK GROUP LIMITED | 03819607 | 27/02/2018 | Dissolved |
| CRISIS UK | 04024938 | 30/07/2020 | Silver |
| FUTURE OFFICE COMMUNICATIONS LIMITED | 07100100 | 27/02/2018 | Dissolved |
| GIS TELECOMS LIMITED | 06585711 | 31/08/2017 | Dissolved |
| NEXT PLC | 04412362 | 25/09/2018 | Silver |
| OPAL CONNECT LIMITED | 05727462 | 27/02/2018 | Dissolved |
| TALKTALK RB LIMITED | 05200716 | 27/02/2018 | Dissolved |
| TALKTALK TECHNOLOGY LIMITED | 03531818 | 27/02/2018 | Dissolved |
| TALKTALK UK COMMUNICATION SERVICES LIMITED | 05714293 | 27/02/2018 | Dissolved |
| TELCO GLOBAL DISTRIBUTION LIMITED | 04353844 | 27/02/2018 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ADVENTURE TELECOM LTD | 10796978 | 30/06/2018 | 31/08/2024 | Bronze |
| BOLT PRO TEM LIMITED | 08975479 | 20/12/2017 | 27/03/2020 | Amber |
| CORE TELECOMMUNICATIONS LIMITED | 03274623 | 31/08/2017 | 31/08/2024 | Not Trading |
| CPW NETWORK SERVICES LIMITED | 05408812 | 31/08/2017 | 31/08/2024 | Silver |
| FIBRENATION LIMITED | 11441177 | 29/06/2018 | 27/03/2020 | Silver |
| GREEN DOT PROPERTY MANAGEMENT LIMITED | 05705868 | 31/08/2017 | 31/08/2024 | Not Trading |
| GREYSTONE TELECOM LIMITED | 04066365 | 31/08/2017 | 31/08/2024 | Not Trading |
| INTERNET MATTERS LIMITED | 08822801 | 20/12/2013 | 09/07/2015 | Silver |
| OB TELECOM LIMITED | 13507341 | 24/09/2021 | 31/08/2024 | One Red Flag |
| ONETEL TELECOMMUNICATIONS LIMITED | 04226697 | 31/08/2017 | 31/08/2024 | Not Trading |
| OPAL BUSINESS SOLUTIONS LIMITED | 05990928 | 27/02/2018 | 31/08/2024 | Not Trading |
| ORIGIN COMMUNICATIONS LIMITED | 10086511 | 13/10/2022 | 31/08/2024 | Amber |
| PIPEX COMMUNICATIONS SERVICES LIMITED | 03059016 | 31/08/2017 | 31/08/2024 | Not Trading |
| PIPEX INTERNET LIMITED | 05306519 | 31/08/2017 | 31/08/2024 | Not Trading |
| PIPEX UK LIMITED | 04063120 | 31/08/2017 | 31/08/2024 | Not Trading |
| PLATFORMX COMMUNICATIONS LTD | 03565511 | 27/02/2018 | 31/08/2024 | Not Trading |
| TALKTALK BRANDS LIMITED | 05840856 | 10/05/2017 | 31/08/2024 | Bronze |
| TALKTALK BUSINESS (2CCH) LIMITED | 06479825 | 10/05/2017 | 31/08/2024 | Not Trading |
| TALKTALK BUSINESS DIRECT LIMITED | 11347230 | 04/05/2018 | 29/09/2023 | One Red Flag |
| TALKTALK COMMUNICATIONS LIMITED | 03849133 | 27/01/2016 | 31/08/2024 | Amber |
| TALKTALK CORPORATE LIMITED | 06755322 | 31/08/2017 | 31/08/2024 | Silver |
| TALKTALK DIRECT LIMITED | 05303195 | 27/02/2018 | 31/08/2024 | Not Trading |
| TALKTALK FINCO LIMITED | 12984607 | 12/03/2021 | 31/08/2024 | One Red Flag |
| TALKTALK GROUP LIMITED | 06534112 | 31/08/2017 | 31/08/2024 | Bronze |
| TALKTALK HOLDINGS LIMITED | 12903683 | 12/03/2021 | 31/08/2024 | Amber |
| TALKTALK MIDCO LIMITED | 12985026 | 12/03/2021 | 31/08/2024 | Not Trading |
| TALKTALK TELECOM GROUP LIMITED | 07105891 | 03/06/2014 | 31/08/2024 | Bronze |
| TALKTALK TELECOM HOLDINGS LIMITED | 03253714 | 31/08/2017 | 31/08/2024 | Silver |
| TALKTALK TV ENTERTAINMENT LIMITED | 05829251 | 07/01/2015 | 31/08/2024 | Silver |
| TELCO GLOBAL LIMITED | 04222886 | 27/02/2018 | 31/08/2024 | Not Trading |
| TELCO HOLDINGS LIMITED | 04219971 | 31/08/2017 | 31/08/2024 | Gold |
| TIPICALL LIMITED | 03216399 | 10/05/2017 | 31/08/2024 | Silver |
| TISCALI UK LIMITED | 03408171 | 31/08/2017 | 31/08/2024 | Not Trading |
| TREETOP TELECOM LIMITED | 11390756 | 31/05/2018 | 31/08/2024 | Not Trading |
| UK TELCO (GB) LIMITED | 04341230 | 27/02/2018 | 31/08/2024 | Not Trading |
| V NETWORKS LIMITED | 05475260 | 27/02/2018 | 31/08/2024 | Not Trading |
| VIDEO NETWORKS LIMITED | 02740910 | 27/02/2018 | 31/08/2024 | Not Trading |
| VIRTUAL1 COMMUNICATIONS LIMITED | 05227052 | 31/08/2017 | 31/08/2024 | Bronze |
| VIRTUAL1 LIMITED | 06177891 | 26/05/2022 | 31/08/2024 | One Red Flag |
| WORLD ONLINE TELECOM LIMITED | 03539650 | 27/02/2018 | 31/08/2024 | Not Trading |