| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| PHOENIX NEWSPAPER PUBLISHING LIMITED | 07908305 | 28/02/2012 | Dissolved |
| THE COMMUNITY CHANNEL | 03655220 | 14/10/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 95 ST. GEORGE'S SQUARE LIMITED | 02286883 | 04/04/1991 | 17/09/1992 | Silver |
| ADVERTISING ASSOCIATION(THE) | 00211587 | 05/12/2007 | 01/06/2012 | Silver |
| CHIME COMMUNICATIONS LIMITED | 01983857 | 25/11/1997 | 30/11/2002 | Silver |
| CHIME ON LINE LIMITED | 03963090 | 11/05/2000 | 30/11/2002 | Dissolved |
| DMWSL 567 LIMITED | 06248455 | 12/10/2012 | 28/09/2017 | Dissolved |
| GASOLINE LIMITED | 04027681 | 25/09/2000 | 30/11/2002 | Dissolved |
| HHCL GROUP LIMITED | 03130743 | 11/12/1995 | 30/11/2002 | Dissolved |
| ITV PLC | 04967001 | 28/02/2008 | 01/06/2010 | Silver |
| MCCANN-ERICKSON ADVERTISING LIMITED | 01372305 | 04/02/2006 | 31/05/2007 | One Red Flag |
| MCCANN-ERICKSON EMEA LIMITED | 00830956 | 31/03/2006 | 31/05/2007 | Bronze |
| MCCANN-ERICKSON UK GROUP LIMITED | 03640484 | 04/05/2004 | 31/05/2007 | Bronze |
| THE HHCL BRASSERIE LIMITED | 03075466 | 13/02/1998 | 30/11/2002 | Dissolved |
| THE INSTITUTE OF PRACTITIONERS IN ADVERTISING (PRE-CHARTER) | 00221167 | 09/04/1992 | 10/06/2003 | Dissolved |
| THE MEDIA TRUST | 02895790 | 14/10/2008 | 27/11/2018 | Gold |
| THIRTY CLUB OF LONDON,LIMITED(THE) | 00167635 | 08/09/2009 | 11/09/2012 | Gold |
| UNITED LONDON COMMUNICATIONS LIMITED | 02158210 | 04/09/1987 | 07/01/2003 | Dissolved |