| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ASCENT HEARING LTD | 07799159 | 05/10/2011 | Dissolved |
| ASCENT INVESTMENTS (UK) LIMITED | 06118688 | 20/02/2007 | Dissolved |
| DESMOND & COMPANY LIMITED | 04318760 | 09/05/2008 | Dissolved |
| Forensic Diagnostic Audiology Ltd | NI051756 | 18/10/2004 | Dissolved |
| REIGATE AND HORSHAM HEARING CENTRES LIMITED | 03068811 | 11/02/2009 | Dissolved |
| Starkey Hearing Alliance | 05331744 | 01/03/2006 | Dissolved |
| THAMES VALLEY HEARING LIMITED | 04792948 | 23/11/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARLINGTON LABORATORIES LIMITED | 03313116 | 17/04/1997 | 25/07/2008 | Dissolved |
| ASCENT INVESTMENTS CENTRAL SERVICES (UK) LIMITED | 06618973 | 13/06/2008 | 03/11/2015 | Dissolved |
| BRITISH SOCIETY OF HEARING AID AUDIOLOGISTS LIMITED | 02835454 | 29/11/1996 | 12/11/2011 | Silver |
| CAMPBELL HEARING AIDS LIMITED | NI046043 | 01/04/2003 | 31/12/2011 | Silver |
| CAMPBELL HEARING AIDS LIMITED | NI046043 | 31/12/2009 | 31/12/2011 | Silver |
| STARKEY LABORATORIES LIMITED | 02691952 | 31/12/1992 | 31/10/2007 | Silver |
| THE COMMONWEALTH SOCIETY FOR THE DEAF | 02739343 | 07/02/1996 | 15/12/2014 | Dissolved |