| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AFFIDATO LIMITED | 09523558 | 02/04/2015 | Dissolved |
| GLOBAL THEATRE TECH LIMITED | 10305368 | 29/09/2016 | Dissolved |
| THE ART PROVENANCE REGISTER LIMITED | 10268756 | 08/07/2016 | Dissolved |
| THE LONDON SCHOOL OF PICTURE & FRAME CONSERVATION LIMITED | 08814013 | 25/06/2017 | Silver |
| The Enchanted Garden Co. Ltd. | 02896930 | 10/02/1994 | Dissolved |
| The Olive Tree Trading Co Ltd | 01421767 | 31/12/1990 | Dissolved |
| The Olive Tree Trading Co Ltd | 01421767 | 31/12/1990 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Aegis Group Sales Ltd | 03190511 | 30/05/1996 | 31/03/1998 | Dissolved |
| Aegis Integrated Solutions Ltd | 03156395 | 10/01/1997 | 12/05/1997 | Dissolved |
| BANKSIDE GALLERY (TRADING) LIMITED | 01986281 | 14/08/2012 | 10/10/2023 | Bronze |
| BANKSIDE GALLERY LIMITED | 01922826 | 14/08/2012 | 10/10/2023 | Gold |
| Europe Talks Tickets Ltd | 04583663 | 18/02/2003 | 31/08/2009 | Dissolved |
| NATIONAL ASSOCIATION FOR GALLERY EDUCATION | 04194208 | 04/04/2001 | 22/11/2007 | Silver |
| PATRONBASE (UK) PARTNERS LTD | 07115297 | 30/09/2016 | 11/01/2018 | One Red Flag |
| THE ALBANY 2001 COMPANY | 04333098 | 06/05/2008 | 10/09/2013 | Silver |
| THE CAMPAIGN FOR DRAWING | 05763509 | 28/06/2010 | 25/03/2020 | Silver |
| TICKETS.COM LIMITED | 02309315 | 01/05/1998 | 13/12/2004 | Silver |
| TICKETS.COM UK LIMITED | 02569106 | 06/10/2000 | 13/12/2004 | Dissolved |