| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALLINGTON PRODUCTIONS LIMITED | 08233630 | 28/09/2012 | Dissolved |
| Mori France Ltd | 02485079 | 26/03/1992 | Dissolved |
| ROBERT M. WORCESTER & ASSOCIATES LTD | 04964208 | 14/11/2003 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BROADCAST DATA SYSTEMS LIMITED | 01935399 | 22/06/1992 | 30/06/2005 | Dissolved |
| EUROPEAN RESEARCH ASSOCIATES LIMITED | 01971323 | 22/06/1991 | 30/06/2005 | Dissolved |
| FIELD & TAB LIMITED | 01958269 | 22/06/1991 | 22/06/1994 | Dissolved |
| FLY THROUGH FILMS LIMITED | 09581803 | 04/01/2018 | 06/11/2020 | Bronze |
| GOING FOR GREEN LIMITED | 03143528 | 21/05/1998 | 17/10/2001 | Dissolved |
| IPSOS (MARKET RESEARCH) LTD | 00948470 | 25/05/1991 | 30/06/2005 | Silver |
| IPSOS EMEA HOLDINGS LTD | 04997072 | 18/02/2004 | 30/06/2005 | Bronze |
| KEEP BRITAIN TIDY | 03496361 | 12/08/1998 | 17/10/2001 | Bronze |
| KENT MESSENGER LIMITED | 00505554 | 01/01/2004 | 31/03/2008 | Dissolved |
| LOCATE IN KENT LIMITED | 03230721 | 22/02/2002 | 05/07/2005 | Silver |
| LONDON SCHOOL OF ECONOMICS AND POLITICAL SCIENCE | 00070527 | 01/08/1995 | 31/07/2005 | Gold |
| MAIDSTONE RADIO LIMITED | 04482717 | 24/09/2002 | 16/01/2007 | Dissolved |
| MEDIA STANDARDS TRUST | 05514310 | 23/05/2006 | 17/12/2015 | Strike Off |
| MORI FINANCIAL SERVICES LIMITED | 01986177 | 22/06/1991 | 19/11/1991 | Dissolved |
| MORI INTERNATIONAL LIMITED | 03092994 | 11/09/1995 | 30/06/2005 | Dissolved |
| MORI LIMITED | 03904207 | 03/03/2000 | 30/06/2005 | Bronze |
| NATIONAL FORUM TRUST(THE) | 01926840 | 20/02/1995 | 24/07/1997 | Not Trading |
| NEW MEDIA RESEARCH LIMITED | 01848104 | 22/06/1991 | 30/06/2005 | Dissolved |
| Numbers Data Processing Ltd | 02375599 | 05/03/1991 | 01/07/1991 | Dissolved |
| ON-LINE TELEPHONE SURVEYS LIMITED | 02276512 | 14/07/1988 | 30/06/2005 | Dissolved |
| PR TEST LIMITED | 02998981 | 21/12/1995 | 30/06/2005 | Dissolved |
| SIMPSON CARPENTER LIMITED | 03533706 | 01/06/1998 | 30/06/2005 | Gold |
| SOLAR CENTURY HOLDINGS LIMITED | 03570325 | 11/08/1999 | 19/05/2001 | Gold |
| Socioconsult Ltd | 01969003 | 22/06/1991 | 30/06/2005 | Dissolved |
| TEST RESEARCH LIMITED | 03017037 | 21/12/1995 | 21/12/1995 | Dissolved |
| THE WILDFOWL & WETLANDS TRUST | 02882729 | 20/06/2002 | 25/06/2008 | Silver |
| UNIVERSITY OF KENT TRUST COMPANY LIMITED | 02613318 | 01/01/2004 | 03/04/2009 | Dissolved |
| WHAT ON EARTH PRODUCTIONS LTD | 11806008 | 04/02/2019 | 12/02/2020 | Silver |
| WHAT ON EARTH PUBLISHING (NORTH AMERICA) LIMITED | 10208947 | 01/06/2016 | 12/01/2023 | Amber |