| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ECHO GROUP LIMITED | 08561844 | 10/06/2013 | Gold |
| ECHO RESEARCH LIMITED | 11192426 | 07/02/2018 | Gold |
| Echo Interactive Ltd | 03767409 | 05/07/1999 | Dissolved |
| Echo Interactive Ltd | 03767409 | 18/06/1999 | Dissolved |
| Echo International European Holdings Ltd | FC021332 | 15/09/1998 | Dissolved |
| Echo Internet Ltd | 03781806 | 05/07/1999 | Dissolved |
| Echo Internet Ltd | 03781806 | 18/06/1999 | Dissolved |
| Echo Market Research Ltd | 03781867 | 05/07/1999 | Dissolved |
| Echo Market Research Ltd | 03781867 | 18/06/1999 | Dissolved |
| Echo Media Analysis Ltd | 03781831 | 05/07/1999 | Dissolved |
| Echo Media Analysis Ltd | 03781831 | 18/06/1999 | Dissolved |
| Echo Reputation Management Ltd | 03781827 | 05/07/1999 | Dissolved |
| Echo Reputation Management Ltd | 03781827 | 18/06/1999 | Dissolved |
| Echo Research Group Ltd | 03651760 | 05/07/1999 | Dissolved |
| Echo Research Group Ltd | 03651760 | 27/10/1998 | Dissolved |
| Echo Training Ltd | 03781801 | 05/07/1999 | Dissolved |
| Echo Training Ltd | 03781801 | 18/06/1999 | Dissolved |
| Eco Energy Care Ltd | 03294055 | 17/01/2001 | Dissolved |
| Kwhr Network Ltd | 03212629 | 14/08/2007 | Dissolved |
| Kwhr Network Ltd | 03212629 | 14/08/2007 | Dissolved |
| Pluswave Ltd | 03766684 | 05/07/1999 | Dissolved |
| Pluswave Ltd | 03766684 | 18/06/1999 | Dissolved |
| REPUTATION DIVIDEND LIMITED | 08662899 | 08/01/2014 | Bronze |
| The Communications Research Group Ltd | 03651758 | 05/07/1999 | Dissolved |
| The Communications Research Group Ltd | 03651758 | 27/10/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARC CINEMAS LIMITED | 03505130 | 05/02/1998 | 08/03/1999 | Dissolved |
| BLS (SURREY) LIMITED | 02908524 | 03/08/1998 | 24/11/1999 | Dissolved |
| EBIQUITY UK HOLDINGS LIMITED | 03667743 | 05/07/1999 | 01/04/2008 | Silver |
| EBIQUITY UK HOLDINGS LIMITED | 03667743 | 13/11/1998 | 24/06/2013 | Silver |
| EBIQUITY UK LIMITED | 02454455 | 20/12/1991 | 01/10/2008 | Gold |
| EBIQUITY UK LIMITED | 02454455 | 20/12/1991 | 24/06/2013 | Gold |
| Eco Energy Care Ltd | 03294055 | 01/10/1998 | 05/12/1999 | Dissolved |