| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ORION FARMING GROUP LIMITED | 04203657 | 19/09/2013 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AFFINITI INTEGRATED SOLUTIONS LTD. | 02817039 | 28/10/1997 | 10/09/2003 | Not Trading |
| ARQIVA COMMUNICATIONS LIMITED | 02928653 | 04/11/1998 | 10/09/2003 | Amber |
| Columbia Communications Europe Ltd | 02855080 | 04/11/1998 | 10/09/2003 | Dissolved |
| HULL TELEPHONE COMPANY LIMITED | 03244388 | 23/10/1997 | 10/09/2003 | Dissolved |
| INMEDIA COMMUNICATIONS (HOLDINGS) LIMITED | 02755211 | 23/10/1997 | 10/09/2003 | Amber |
| K T L HOLDINGS LIMITED | 03298190 | 23/10/1997 | 10/09/2003 | Dissolved |
| KCOM CONTACT CENTRES LIMITED | 03703097 | 01/04/2003 | 10/09/2003 | Bronze |
| KCOM GROUP LIMITED | 02150618 | 23/10/1997 | 10/09/2003 | Bronze |
| KCOM HOLDINGS LIMITED | 03317871 | 23/10/1997 | 10/09/2003 | Silver |
| KCOM INTERNATIONAL LIMITED | 02563065 | 23/10/1997 | 10/09/2003 | Dissolved |
| KINGLINE CONSULTANCY LIMITED | 02249130 | 23/10/1997 | 10/09/2003 | Dissolved |
| KINGSTON COMMUNICATIONS (DATA) LTD. | 00946237 | 09/03/2001 | 10/09/2003 | Dissolved |
| KINGSTON COMMUNICATIONS (HULL) LTD. | 03607871 | 09/03/2001 | 10/09/2003 | Dissolved |
| KINGSTON INFORMATION SERVICES LIMITED | 03317824 | 23/10/1997 | 10/09/2003 | Dissolved |
| KINGSTON LABORATORIES LIMITED | 03263196 | 29/05/2002 | 10/09/2003 | Dissolved |
| KINGSTON NETWORK HOLDINGS LIMITED | 03510105 | 12/05/1998 | 10/09/2003 | Dissolved |
| KINGSTON SERVICES HOLDINGS LIMITED | 03504144 | 12/05/1998 | 10/09/2003 | Not Trading |
| KINGSTON TORCH INVESTMENTS LIMITED | 02295414 | 23/10/1997 | 10/09/2003 | Dissolved |
| KINGSTON VISION LIMITED | 03673039 | 20/11/1998 | 10/09/2003 | Dissolved |
| KINGSTON VOICEWARE LIMITED | 03317869 | 23/10/1997 | 10/09/2003 | Dissolved |
| Kingston Internet Ltd | 03072284 | 23/10/1997 | 10/09/2003 | Dissolved |
| Kingston Satellite Investments Ltd | 03085132 | 23/10/1997 | 10/09/2003 | Dissolved |
| OGI FIBRE LIMITED | 13325216 | 09/04/2021 | 02/07/2021 | Not Trading |
| REAL FIBRE LIMITED | 13369989 | 30/04/2021 | 02/07/2021 | Not Trading |
| SIX DEGREES HOLDINGS LIMITED | 07473012 | 26/07/2011 | 22/07/2015 | Gold |
| SPECTRUM FIBRE HOLDCO LIMITED | 12870014 | 12/10/2020 | 12/04/2023 | Amber |
| SPIRITEL LIMITED | 05035921 | 05/04/2006 | 10/11/2010 | Dissolved |
| STV GROUP PLC | SC203873 | 04/09/2000 | 28/02/2007 | Silver |
| Shaketactic Ltd | 03352310 | 23/10/1997 | 10/09/2003 | Dissolved |
| TIMEPLEX GROUP LIMITED | 01434477 | 09/03/2001 | 10/09/2003 | Dissolved |
| TIMEPLEX HOLDINGS LIMITED | 01431948 | 09/03/2001 | 10/09/2003 | Dissolved |
| TORCH COMMUNICATIONS LTD. | 03318088 | 23/10/1997 | 10/09/2003 | Dissolved |
| The Kingston Communications (Hull) Trustees Ltd | 03779712 | 14/06/1999 | 10/09/2003 | Dissolved |
| ULTRALINK SYSTEMS LIMITED | 02479754 | 23/03/2001 | 10/09/2003 | Dissolved |
| WISPIRE LIMITED | 07660833 | 21/07/2015 | 03/11/2016 | Silver |
| Wardenbefore Ltd | 02042840 | 23/10/1997 | 10/09/2003 | Dissolved |
| YORKSHIRE COMMUNICATIONS GROUP LTD. | 03244195 | 23/10/1997 | 10/09/2003 | Dissolved |