| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CANFORD HOUSE MANAGEMENT LIMITED | 00973867 | 14/11/2009 | Gold |
| Media Direction Europe Ltd | 02752868 | 31/12/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BBDO EMEA LIMITED | 01901389 | 07/04/1997 | 03/05/2002 | Silver |
| BBDO EUROPEAN HOLDINGS LIMITED | 04127645 | 14/12/2000 | 03/05/2002 | Silver |
| BBDO ITALY LIMITED | 03908117 | 13/01/2000 | 14/02/2006 | Dissolved |
| Bbdo Cee Ltd | 02409974 | 22/12/1998 | 16/05/2002 | Dissolved |
| Brand Consultancy Ltd (The) | 02494140 | 20/04/1992 | 23/11/1993 | Dissolved |
| British Marketing and Distribution Company Limited(The) | 00310058 | 31/12/1991 | 28/12/1993 | Dissolved |
| CANFORD HOUSE MANAGEMENT LIMITED | 00973867 | 10/07/2002 | 13/02/2007 | Gold |
| Chapter & Verse Limited | 02714433 | 12/08/1992 | 23/11/1993 | Dissolved |
| DENTSU INTERNATIONAL GROUP PARTICIPATIONS LIMITED | 06673979 | 15/08/2008 | 01/10/2009 | One Red Flag |
| DENTSU INTERNATIONAL LIMITED | 01403668 | 31/03/2007 | 01/10/2009 | Amber |
| DTZ HOLDINGS PLC. | 02088415 | 08/03/2004 | 08/12/2011 | Dissolved |
| Deltakos (U K) Ltd | 00993457 | 07/11/1991 | 15/11/1993 | Dissolved |
| FIRST CITY ADVERTISING FACILITIES LIMITED | 01710224 | 01/07/1995 | 31/07/1997 | One Red Flag |
| FIRST CITY ADVERTISING LIMITED | 01067045 | 01/07/1995 | 31/07/1997 | Dissolved |
| GATHER (FORUM) LTD | 05244493 | 01/12/2005 | 01/08/2014 | One Red Flag |
| GATHER (FORUM) LTD | 05244493 | 01/12/2005 | 01/08/2014 | One Red Flag |
| INSTINCT CEE LIMITED | 04818406 | 02/07/2003 | 14/02/2006 | Dissolved |
| J Walter Thompson Services | 02666102 | 26/11/1992 | 15/12/1993 | Dissolved |
| J Walter Thompson Services | 02666102 | 26/11/1992 | 15/12/1993 | Dissolved |
| J. WALTER THOMPSON COMPANY LIMITED | 01190652 | 31/12/1991 | 15/12/1993 | Dissolved |
| J. WALTER THOMPSON U.K. HOLDINGS LIMITED | 00280055 | 28/05/1992 | 15/12/1993 | Gold |
| Jwt Direct (London) Limited | 02723558 | 23/07/1992 | 15/12/1993 | Dissolved |
| Jwt Healthcare Limited | 02723554 | 23/07/1992 | 28/12/1993 | Dissolved |
| MEDIA DIRECTION CEE LIMITED | 02829719 | 22/12/1998 | 16/05/2002 | Dissolved |
| Media Direction Europe Ltd | 02752868 | 07/10/1999 | 03/05/2002 | Dissolved |
| NEXT 15 GROUP PLC | 01579589 | 01/07/2011 | 30/06/2017 | Silver |
| P.O.A. HOLDINGS LIMITED | 01267021 | 18/12/1991 | 10/09/1993 | Gold |
| PROXIMITY CEE LIMITED | 02823879 | 22/12/1998 | 03/05/2002 | Dissolved |
| STHREE PLC | 03805979 | 03/05/2006 | 23/04/2015 | Gold |
| THE BRITISH STANDARDS INSTITUTION | ZC000202 | 01/06/2015 | 31/03/2018 | Gold |
| THE INSTITUTE OF PRACTITIONERS IN ADVERTISING (PRE-CHARTER) | 00221167 | 21/04/1993 | 30/09/1993 | Dissolved |
| Thompson,J Walter,Sponsorship Ltd | 02604507 | 20/05/1991 | 23/11/1993 | Dissolved |
| VML(UK) LIMITED | 01660783 | 12/01/1992 | 15/12/1993 | Gold |
| WACL LIMITED | 05245051 | 19/12/2005 | 01/08/2014 | Silver |
| WACL LIMITED | 05245051 | 01/12/2005 | 01/08/2014 | Silver |
| WPP PENSION TRUSTEES LIMITED | 01596196 | 31/12/1990 | 25/11/1993 | Not Trading |