| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AUDITSTAR LONDON LTD. | 04178121 | 05/01/2009 | One Red Flag |
| Bradway Consultants Ltd | 02998187 | 22/12/1994 | Dissolved |
| Cargo Images Holdings Ltd | 04257258 | 10/09/2001 | Dissolved |
| Checksolve Limited | 02713462 | 04/06/1992 | Dissolved |
| GLAZIERS HALL LIMITED | 01217192 | 16/09/2022 | Gold |
| SOLARIS GLOBAL MEDIA LIMITED | 09705546 | 28/07/2015 | Not Trading |
| SPARKFAST LIMITED | 03831137 | 17/09/1999 | Silver |
| THE GLAZIERS FOUNDATION | 07737934 | 12/06/2023 | Bronze |
| The Strategic Media Partnership Ltd | 04159196 | 13/02/2001 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AUDITSTAR LONDON LTD. | 04178121 | 13/03/2001 | 16/09/2009 | One Red Flag |
| CLEARVIEW MEDIA SOLUTIONS LIMITED | 04934989 | 16/02/2015 | 17/10/2017 | Dissolved |
| INNVOTEC LIMITED | 02030086 | 01/07/2010 | 15/10/2018 | Amber |
| ISADORE, LITTLE & CO LIMITED | 04520732 | 01/01/2003 | 20/03/2017 | Dissolved |
| TANGIBLE SECURITIES LIMITED | 01531692 | 30/04/2008 | 12/04/2011 | Bronze |
| TANGIBLE SECURITIES LIMITED | 01531692 | 03/01/2006 | 30/09/2011 | Bronze |
| THE GLAZIERS FOUNDATION | 07737934 | 12/11/2012 | 01/12/2019 | Bronze |