| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CONTINENTAL MICROWAVE LIMITED | 01081898 | 26/06/2020 | Dissolved |
| Cadniques Ltd | 02370864 | 10/08/1991 | Dissolved |
| GIGAWAVE LIMITED | 02704269 | 26/06/2020 | Dissolved |
| HC 1230 LIMITED | 09083141 | 12/06/2014 | Dissolved |
| IABM INVESTMENTS LIMITED | 03795459 | 26/09/2006 | Silver |
| MARQUIS BROADCAST LIMITED | 07036797 | 30/06/2018 | Bronze |
| PITMAN EXECUTIVE SOLUTIONS LIMITED | 07370218 | 09/09/2010 | Gold |
| Pro-Bel Software Ltd | 02716230 | 14/11/2006 | Dissolved |
| THE INTERNATIONAL ASSOCIATION OF BROADCASTING MANUFACTURERS LIMITED | 09195252 | 29/08/2014 | Not Trading |
| Xebec Electronic Production Services Ltd | 02925043 | 27/10/1994 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACRON LIMITED | 02587656 | 26/02/2009 | 11/03/2014 | Dissolved |
| BROADCAST INVESTMENTS LIMITED | 03328124 | 24/10/2005 | 11/03/2014 | Dissolved |
| CEL ELECTRONICS LIMITED | 01342394 | 26/02/2009 | 11/03/2014 | Dissolved |
| DANMON GROUP UK LIMITED | 02869586 | 01/10/2012 | 01/01/2016 | One Red Flag |
| ELECTROCRAFT LABORATORIES LTD | 00656632 | 26/02/2009 | 11/03/2014 | Dissolved |
| GRASS VALLEY LIMITED | 01160119 | 26/02/2009 | 11/03/2014 | One Red Flag |
| LEGACY BROADCAST GROUP HOLDINGS LIMITED | 09639438 | 26/06/2020 | 30/04/2023 | Not Trading |
| PEBBLE BEACH SYSTEMS GROUP PLC | 04082188 | 06/04/2018 | 30/04/2023 | Silver |
| POST IMPRESSIONS (SYSTEMS) LIMITED | 03489629 | 26/02/2009 | 11/03/2014 | Dissolved |
| PRO-BEL DEVELOPMENTS LIMITED | 01895288 | 14/05/1991 | 11/03/2014 | Dissolved |
| PRO-BEL GROUP LIMITED | 01316843 | 29/05/1992 | 11/03/2014 | Not Trading |
| PRO-BEL HOLDINGS LIMITED | 04808255 | 05/11/2003 | 11/03/2014 | Not Trading |
| PRO-BEL LIMITED | 03487653 | 24/12/1997 | 11/03/2014 | Silver |
| PSP DIGITAL LIMITED | 03156669 | 26/02/2009 | 11/03/2014 | Dissolved |
| SNELL & WILCOX TRUSTEE LIMITED | 03807935 | 26/02/2009 | 11/03/2014 | Dissolved |
| SNELL CORPORATION LIMITED | 06592512 | 01/08/2010 | 11/03/2014 | One Red Flag |
| TELESTREAM UK LTD | 06976460 | 01/12/2013 | 17/08/2016 | Gold |
| VISTEK ELECTRONICS LIMITED | 03561900 | 24/10/2005 | 11/03/2014 | Dissolved |
| YOSPACE ENTERPRISES LIMITED | 06846593 | 22/02/2012 | 01/02/2019 | Dissolved |
| YOSPACE TECHNOLOGIES LIMITED | 04494783 | 01/02/2012 | 01/02/2019 | Silver |