| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Auctions International | 01028180 | 01/11/2001 | Dissolved |
| Bishopswood House Ltd | 00493784 | 12/03/1991 | Dissolved |
| Blenstock Group Ltd | 05609884 | 02/11/2005 | Dissolved |
| Bonhalms Ltd | 00866485 | 01/11/2001 | Dissolved |
| Bonhams Brooks Ps&n (Holdings) Ltd | 06547362 | 28/03/2008 | Dissolved |
| Bonhams Ipswich | 01973087 | 01/11/2001 | Dissolved |
| Bonhams Kent | 01975991 | 01/11/2001 | Dissolved |
| Bonhams Nominees Ltd | 03453706 | 13/12/2001 | Dissolved |
| Bonhams West Country Ltd | 02445486 | 10/05/2001 | Dissolved |
| Bonhams West Two | 01502975 | 01/11/2001 | Dissolved |
| Bonhams in Chester | 01539465 | 01/11/2001 | Dissolved |
| Bonhams in Wales | 01327453 | 01/11/2001 | Dissolved |
| Gavel Finance | 00870046 | 01/11/2001 | Dissolved |
| Heri | 03901977 | 16/10/2000 | Dissolved |
| Louwman Brooks | 04065528 | 12/10/2000 | Dissolved |
| PS&N (PR) LIMITED | 05065574 | 19/12/2013 | Dissolved |
| PS&N (PROPERTIES) | 00869354 | 01/11/2001 | Dissolved |
| Ps&n Uk | 00647900 | 01/11/2001 | Dissolved |
| The Historic Motor Business Association | 03325623 | 28/02/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 101 NEW BOND STREET LIMITED | 06389811 | 04/10/2007 | 23/08/2021 | Gold |
| BBPS&N PROPERTY INVESTMENTS LIMITED | 04128958 | 02/02/2001 | 05/04/2007 | Silver |
| BONHAMS & BROOKS LIMITED | 02939493 | 31/10/2000 | 11/09/2018 | Not Trading |
| BONHAMS 1793 LIMITED | 04326560 | 21/11/2001 | 11/09/2018 | Bronze |
| BONHAMS BROOKS PS&N LIMITED | 07796675 | 04/10/2011 | 11/09/2018 | Not Trading |
| BONHAMS HOLDINGS LIMITED | 04232151 | 20/06/2001 | 11/09/2018 | Not Trading |
| BONHAMS LIMITED | 04358636 | 23/01/2002 | 11/09/2018 | Not Trading |
| BONHAMS SCOTLAND LIMITED | SC228376 | 22/02/2002 | 04/02/2003 | Not Trading |
| BRITISH RACING DRIVERS CLUB LIMITED(THE) | 00257980 | 26/05/2005 | 02/09/2012 | Silver |
| CAMERTS MANAGEMENT LIMITED | 01285548 | 01/11/2001 | 29/11/2006 | Gold |
| LITTLE VENICE GARDEN AMENITY LIMITED | 01558010 | 31/07/1991 | 03/08/2001 | Gold |
| Louwman Brooks | 04065528 | 12/10/2000 | 30/10/2001 | Dissolved |
| PS & N (HOLDINGS) LIMITED | 06389718 | 04/10/2007 | 23/08/2021 | Silver |
| PS&N DEVELOPMENTS LIMITED | 07485704 | 07/01/2011 | 11/09/2018 | Not Trading |
| PS&N LIMITED | 03026473 | 01/11/2001 | 23/08/2021 | Dissolved |
| QURU LIMITED | 06144918 | 21/09/2007 | 20/09/2019 | Dissolved |
| ROBERT BROOKS (AUCTIONEERS) LIMITED | 02367048 | 27/02/1992 | 11/09/2018 | Not Trading |
| SILVERSTONE HOLDINGS LIMITED | 05223843 | 01/08/2005 | 18/05/2006 | Dissolved |
| THE STEERING WHEEL CLUB LIMITED | 03326194 | 26/02/1997 | 23/08/2021 | Not Trading |
| TROWELLCO LIMITED | 12283145 | 25/10/2019 | 23/08/2021 | Silver |
| UNITED AUCTIONEERS LIMITED | 04493584 | 24/07/2002 | 11/09/2018 | Not Trading |