| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BLACK CAT DIRECT LIMITED | 03346609 | 02/02/2004 | Dissolved |
| BLACK CAT RMG:CONNECT LIMITED | 03208156 | 02/02/2004 | Dissolved |
| Brand Consultancy Ltd (The) | 02494140 | 09/09/2002 | Dissolved |
| British Marketing and Distribution Company Limited(The) | 00310058 | 09/09/2002 | Dissolved |
| COLLOQUIAL UK LIMITED | 00830818 | 21/01/2003 | Dissolved |
| CONQUEST CREATIVE SERVICES LIMITED | 01170701 | 21/01/2003 | Dissolved |
| CONQUEST MEDIA LIMITED | 02342238 | 21/01/2003 | Dissolved |
| D.A.G CONSULTANCY LIMITED | 06217600 | 18/04/2007 | Gold |
| Digital@jwt Ltd | 03241855 | 09/09/2002 | Dissolved |
| GMT+0 LIMITED | 03415751 | 08/07/2003 | Dissolved |
| J. WALTER THOMPSON COMPANY LIMITED | 01190652 | 09/09/2002 | Dissolved |
| J. WALTER THOMPSON U.K. HOLDINGS LIMITED | 00280055 | 09/09/2002 | Gold |
| SANTO U.K LIMITED | 02629696 | 02/02/2004 | Amber |
| TEAM COSMO UK LIMITED | 03449519 | 12/08/2002 | Dissolved |
| Thompson Connect Ltd | 03449566 | 09/09/2002 | Dissolved |
| Thompson,J Walter,Sponsorship Ltd | 02604507 | 09/09/2002 | Dissolved |
| VML(UK) LIMITED | 01660783 | 09/09/2002 | Silver |
| WPP PENSION TRUSTEES LIMITED | 01596196 | 26/02/2024 | Strike Off |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EVERYSTONE LIMITED | 02333526 | 26/09/2005 | 01/01/2007 | Dissolved |
| GMT+0 LIMITED | 03415751 | 08/07/2003 | 05/12/2022 | Dissolved |
| STREATLEIGH COURT MANAGEMENT LIMITED | 01809016 | 29/04/1991 | 30/09/1997 | Silver |
| STREATLEIGH COURT MANAGEMENT LIMITED | 01809016 | 29/04/1991 | 30/09/1997 | Silver |
| WPP PENSION TRUSTEES LIMITED | 01596196 | 13/12/2002 | 17/06/2009 | Strike Off |
| WPP PENSION TRUSTEES LIMITED | 01596196 | 04/01/2022 | 01/12/2023 | Strike Off |