| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Abmrc Ltd | 03230551 | 29/07/1996 | Dissolved |
| COMMUNITY MEETING POINT HARPENDEN | 03863736 | 01/04/2011 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| E.S.A. (MARKET RESEARCH) LIMITED | 01422179 | 22/06/1991 | 05/02/2007 | Gold |
| IMSA LIMITED | 05528086 | 04/08/2005 | 30/03/2007 | Dissolved |
| INTERVIEWER QUALITY CONTROL SCHEME(THE) | 02020172 | 20/06/1996 | 08/02/1999 | Gold |
| MARKET RESEARCH SOCIETY(THE) | 00518685 | 30/04/2001 | 31/03/2007 | Silver |
| Quality Audit Services Ltd | 03182856 | 04/10/2004 | 08/11/2007 | Dissolved |
| The British Market Research Association Ltd | 03419017 | 01/09/1998 | 03/02/1999 | Dissolved |
| Trade Research Ltd | 01576347 | 31/08/2000 | 08/11/2007 | Dissolved |