| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EAMONT COURT FREEHOLD (NW8) LIMITED | 15089382 | 11/11/2024 | Bronze |
| HIRE REALM LTD | 03965728 | 06/04/2000 | Dissolved |
| HIRE REALM LTD | 03965728 | 06/04/2000 | Dissolved |
| INSTITUTE OF MUSICAL INSTRUMENT TECHNOLOGY(THE) | 00686206 | 30/09/2016 | Bronze |
| MY PROPERTY RENTALS LIMITED | 11211361 | 19/02/2018 | One Red Flag |
| Mia News Ltd. | 04171999 | 01/07/2002 | Dissolved |
| Mia News Ltd. | 04171999 | 02/03/2001 | Dissolved |
| Phelps Pianos Ltd | 03262364 | 11/10/1996 | Dissolved |
| WESTLON TRUST | 01295513 | 01/02/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARTIFAX SOFTWARE LIMITED | 02007321 | 31/12/1992 | 28/11/1993 | Bronze |
| BRITISH MUSIC FAIRS LIMITED | 01389479 | 01/08/2002 | 15/09/2005 | Dissolved |
| BRITISH MUSIC FAIRS LIMITED | 01389479 | 06/09/1996 | 15/09/2005 | Dissolved |
| Grovewood Assured Tenancies Ltd | 02664370 | 20/11/1992 | 20/11/1995 | Dissolved |
| HAMMERSON HOME CHARITABLE TRUST | 01672002 | 10/01/2005 | 15/12/2010 | Dissolved |
| INSTITUTE OF MUSICAL INSTRUMENT TECHNOLOGY(THE) | 00686206 | 25/05/1995 | 21/05/1998 | Bronze |
| INSTITUTE OF MUSICAL INSTRUMENT TECHNOLOGY(THE) | 00686206 | 25/05/1995 | 22/04/2009 | Bronze |
| MARKSON PIANOS LIMITED | 01735450 | 31/12/1990 | 14/05/1992 | Gold |
| MARKSON PIANOS LIMITED | 01735450 | 31/12/1990 | 06/11/2021 | Gold |
| MIA (CREDIT) LIMITED | 02484478 | 01/07/2002 | 15/09/2005 | Dissolved |
| MUSIC FOR ALL | 03193551 | 01/07/2002 | 15/09/2005 | Gold |
| MUSIC INDUSTRIES ASSOCIATION | 02091034 | 01/07/2002 | 15/09/2005 | Gold |
| MUSIC INDUSTRIES ASSOCIATION | 02091034 | 21/05/1996 | 13/09/2007 | Gold |
| Mia Music Trust | 02471323 | 01/07/2002 | 15/09/2005 | Dissolved |
| Mia Music Trust | 02471323 | 20/03/1997 | 15/09/2005 | Dissolved |
| NATHANIEL BERRY & SONS LIMITED | 00238614 | 31/12/1991 | 06/11/2021 | Gold |
| NATHANIEL BERRY & SONS LIMITED | 00238614 | 31/12/1991 | 06/11/2021 | Gold |
| PIANOCRAFT LIMITED | 01074933 | 31/10/1991 | 06/11/2021 | Silver |
| THE WEST LONDON SYNAGOGUE OF BRITISH JEWS | 08578248 | 11/05/2021 | 28/06/2022 | Gold |