| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Forest F M Ltd | 04149138 | 27/07/2007 | Dissolved |
| Jb Consolidated Ltd | 04336579 | 14/12/2001 | Dissolved |
| MUXCO WALES LTD | 05937209 | 15/09/2006 | Silver |
| Merlin Fm Ltd | 04230896 | 28/06/2001 | Dissolved |
| Oxford Radio Ltd | 04325506 | 20/11/2001 | Dissolved |
| Oxford Radio Ltd | 04325506 | 20/11/2001 | Dissolved |
| Primetime Digital Radio Ltd | 05946431 | 26/09/2006 | Dissolved |
| RADIO HAMPSHIRE LIMITED | 03759569 | 25/07/2007 | Dissolved |
| Reading Broadcast Ltd | 03690447 | 29/06/2001 | Dissolved |
| Rugby on Air Co Ltd | 04032630 | 01/09/2000 | Dissolved |
| SPORTS DIGITAL RADIO LIMITED | 09318696 | 19/11/2014 | Dissolved |
| STARCO MEDIA LIMITED | 07067930 | 30/11/2009 | Dissolved |
| Speed 9299 Ltd | 04510183 | 04/10/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 99.9 RADIO NORWICH LIMITED | 05234082 | 05/10/2004 | 10/08/2006 | Dissolved |
| Big Fm Radio (West Midlands) Ltd | 04000698 | 27/10/2000 | 09/11/2001 | Dissolved |
| COUNTRY BROADCASTING LTD | 10021673 | 23/02/2016 | 11/03/2020 | One Red Flag |
| DEE 106.3 LIMITED | 04042203 | 10/04/2002 | 26/04/2010 | Silver |
| MUXCO INVESTMENTS LIMITED | 05938376 | 18/09/2006 | 31/03/2013 | Gold |
| NATION BROADCASTING LIMITED | 03707801 | 14/01/2003 | 01/07/2004 | Bronze |
| NATION RADIO LIMITED | 04041838 | 24/07/2000 | 13/03/2001 | Amber |
| NORTH EAST RADIO LIMITED | 04047672 | 04/08/2000 | 13/03/2001 | Dissolved |
| NOW DIGITAL (EAST MIDLANDS) LIMITED | 04047680 | 04/08/2000 | 13/03/2001 | Silver |
| Norfolk Radio Ltd | 03821239 | 25/11/2002 | 26/10/2004 | Dissolved |
| RADIO GLYNDWR LIMITED | 06692087 | 09/09/2008 | 26/04/2010 | Dissolved |
| Radio Barnsley Ltd | 03997697 | 29/04/2002 | 29/04/2002 | Dissolved |
| SILK F M LIMITED | 03106027 | 10/06/2009 | 26/04/2010 | One Red Flag |
| STORM BROADCASTING LIMITED | 04091105 | 11/10/2000 | 08/11/2001 | Not Trading |
| SWITCHDIGITAL (LONDON) LIMITED | 03729042 | 28/11/2003 | 31/07/2006 | Silver |
| SWITCHDIGITAL (SCOTLAND) LIMITED | SC200916 | 28/04/2000 | 03/07/2001 | Amber |
| THE DIGITAL RADIO GROUP (LONDON) LIMITED | 03903499 | 26/07/2000 | 12/10/2001 | Gold |
| THE DIGITAL RADIO GROUP (WEST MIDLANDS) LIMITED | 04047677 | 04/08/2000 | 13/03/2001 | Dissolved |
| THE DIGITAL RADIO GROUP LIMITED | 04027646 | 05/07/2000 | 13/03/2001 | Silver |
| THE STORM (DIGITAL RADIO) LIMITED | 04089796 | 13/10/2000 | 08/11/2001 | Not Trading |
| White Rose Regional Radio Ltd | 03225286 | 19/10/2000 | 09/11/2001 | Dissolved |