| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Big Team Productions Ltd | 03853764 | 06/10/1999 | Dissolved |
| Dormco 1005 Ltd | 03798971 | 18/10/1999 | Dissolved |
| Dormco 1006 Ltd. | 03053080 | 13/11/2002 | Dissolved |
| Dormco 1007 Ltd | 04128824 | 11/11/2002 | Dissolved |
| Dormco 1008 Ltd | 04128786 | 31/07/2003 | Dissolved |
| Eleven Seventy Lts=d | 02794860 | 01/05/2001 | Dissolved |
| MXR LONDON HOLDINGS LIMITED | 04051911 | 12/10/2000 | Dissolved |
| MXR LONDON LIMITED | 03671386 | 12/10/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALPHA BROADCASTING LIMITED | 02997080 | 25/07/1996 | 25/06/1999 | Strike Off |
| BORDER RADIO HOLDINGS LIMITED | 03376590 | 27/05/1997 | 18/05/1999 | Dissolved |
| BRIDLINGTON RADIO LIMITED | 03677634 | 18/09/2000 | 17/09/2001 | Dissolved |
| CENTRAL FM LIMITED | SC115009 | 18/06/2001 | 17/09/2001 | One Red Flag |
| DIGITAL NEWS NETWORK LIMITED | 04130784 | 04/07/2001 | 28/07/2006 | Not Trading |
| DURHAM FM LIMITED | 03838404 | 19/04/2001 | 20/12/2001 | Dissolved |
| FIRST RADIO SALES LIMITED | 02795622 | 31/10/2002 | 02/12/2002 | Strike Off |
| GMG RADIO LIMITED | 04184678 | 05/04/2001 | 25/10/2002 | Not Trading |
| GUARDIAN MEDIA GROUP PLC | 00094531 | 31/01/2006 | 27/02/2009 | Silver |
| Great Yorkshire Gold Ltd | 03735229 | 01/10/2000 | 20/12/2001 | Dissolved |
| Great Yorkshire Gold Radio Ltd | 03737572 | 01/10/2000 | 20/12/2001 | Dissolved |
| Great Yorkshire Radio Ltd | 03109188 | 02/10/1995 | 30/11/1996 | Dissolved |
| HUDDERSFIELD FM LIMITED | 03260736 | 18/09/2000 | 20/08/2001 | Dissolved |
| IVEL FM LIMITED | 04236073 | 19/07/2001 | 06/10/2001 | Dissolved |
| Independent Radio Sales Ltd | 03161759 | 31/10/2002 | 02/12/2002 | Dissolved |
| KATZ TELEVISION SALES LTD | 02778427 | 31/10/2002 | 02/12/2002 | Dissolved |
| KATZ UK LIMITED | 02791113 | 31/10/2002 | 02/12/2002 | Dissolved |
| KMFM CANTERBURY LIMITED | 03222561 | 19/04/2000 | 27/07/2001 | Dissolved |
| Katz Radio Sales Ltd | 03042183 | 31/10/2002 | 02/12/2002 | Dissolved |
| M&g Media Investment Ltd | 03798972 | 31/01/2000 | 27/03/2001 | Dissolved |
| MINSTER SOUND RADIO (YORK) LIMITED | 03092759 | 18/09/2000 | 17/09/2001 | Dissolved |
| MINSTER SOUND RADIO LIMITED | 02602667 | 24/05/2000 | 20/08/2001 | Dissolved |
| MXR HOLDINGS LIMITED | 04052195 | 12/10/2000 | 15/01/2009 | Dissolved |
| MXR LIMITED | 04051541 | 12/10/2000 | 15/01/2009 | Dissolved |
| NORTHALLERTON FM LIMITED | 04174134 | 06/04/2001 | 11/12/2001 | Dissolved |
| North West Radio Co Ltd | 03046009 | 26/05/1995 | 16/09/1996 | Dissolved |
| ONEWORD RADIO LIMITED | 03678397 | 24/01/2001 | 13/12/2002 | Dissolved |
| RADIO ACADEMY TRADING LIMITED | 02875446 | 21/04/2004 | 01/11/2004 | Dissolved |
| RADIO ACADEMY(THE) | 01978864 | 21/04/2004 | 09/02/2009 | Gold |
| RADIO INVESTMENTS LTD. | 01038766 | 09/03/2000 | 10/05/2004 | Dissolved |
| RADIO SERVICES LIMITED | 02996187 | 09/03/2000 | 16/12/2002 | Dissolved |
| RADIOCENTRE LIMITED | 02669040 | 01/07/2006 | 01/05/2009 | Bronze |
| READING BROADCASTING COMPANY LIMITED | 03765812 | 05/09/2000 | 02/12/2005 | Dissolved |
| REAL AND SMOOTH LIMITED | 03739421 | 17/09/1999 | 27/02/2009 | Silver |
| REAL RADIO (NORTH EAST) LIMITED | 02802028 | 18/10/2006 | 27/02/2009 | Silver |
| REAL RADIO (NORTH WEST) LIMITED | 03409448 | 18/10/2006 | 27/02/2009 | Silver |
| REAL RADIO (SCOTLAND) LIMITED | SC145214 | 28/06/2001 | 27/02/2009 | One Red Flag |
| REAL RADIO (YORKSHIRE) LIMITED | 03798969 | 18/10/1999 | 27/02/2009 | Gold |
| REAL RADIO LIMITED | 03815009 | 18/10/1999 | 27/02/2009 | Silver |
| REAL RADIO XS LIMITED | 04128825 | 27/09/2007 | 27/02/2009 | Bronze |
| ROCK RADIO LIMITED | SC131424 | 29/09/2006 | 27/02/2009 | Not Trading |
| SCOTT PLACE 1003 LIMITED | 04220595 | 15/05/2003 | 01/12/2003 | Dissolved |
| SILK F M LIMITED | 03106027 | 08/09/2000 | 25/09/2001 | One Red Flag |
| SMOOTH DIGITAL RADIO LIMITED | 04054273 | 01/02/2007 | 27/02/2009 | Not Trading |
| SMOOTH RADIO INVESTMENTS LIMITED | 02585798 | 12/07/2002 | 27/02/2009 | Silver |
| SMOOTH RADIO LIMITED | 02775358 | 12/07/2002 | 27/02/2009 | Gold |
| SMOOTH RADIO LONDON LIMITED | 01627850 | 12/07/2002 | 27/02/2009 | One Red Flag |
| SMOOTH RADIO MIDLANDS LIMITED | 02942105 | 01/02/2007 | 27/02/2009 | Gold |
| SMOOTH RADIO NE LIMITED | 05094550 | 01/02/2007 | 27/02/2009 | Silver |
| SMOOTH RADIO SCOTLAND LIMITED | SC243652 | 01/02/2007 | 27/02/2009 | Bronze |
| SPIRE FM LIMITED | 02597649 | 13/06/2001 | 26/09/2001 | Dissolved |
| STRAY FM LIMITED | 02774366 | 31/01/2001 | 20/09/2001 | Dissolved |
| SUN FM LIMITED | 02955400 | 07/02/1997 | 17/05/1999 | Gold |
| THE COMMERCIAL RADIO COMPANIES ASSOCIATION LIMITED | 01120214 | 12/05/2005 | 15/03/2007 | Dissolved |
| TWO BOROUGHS RADIO LIMITED | 03704387 | 21/03/2001 | 25/07/2002 | Dissolved |
| The Quay Radio Ltd | 03080194 | 01/06/2001 | 26/09/2001 | Dissolved |
| UK DIGITAL RADIO LIMITED | 04104532 | 10/09/2008 | 10/08/2009 | One Red Flag |
| WAVE 105 FM LIMITED | 03050698 | 19/06/2000 | 18/10/2000 | Dissolved |
| WEST COUNTRY RADIO HOLDINGS LIMITED | 03109609 | 31/03/2000 | 16/12/2002 | Dissolved |
| YORKSHIRE COAST RADIO LIMITED | 02775583 | 18/09/2000 | 20/09/2001 | Dissolved |