| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Computer Trade Shows Ltd | 03417891 | 02/08/2001 | Dissolved |
| Global Media Europe Ltd | 03678334 | 12/01/1999 | Dissolved |
| Imark Events Ltd | 03615603 | 02/08/2001 | Dissolved |
| Learned Information (Online) Ltd | FC015171 | 01/02/2002 | Dissolved |
| Truemist Professional Exhibitions Ltd | 01555004 | 02/08/2001 | Dissolved |
| Vnunet.Com Ltd | 03994781 | 28/06/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BREAKTHROUGH PUBLISHING LIMITED | 04206420 | 20/01/2006 | 07/02/2007 | Dissolved |
| IMARK COMMUNICATIONS LIMITED | 03535474 | 02/08/2001 | 07/02/2007 | Dissolved |
| LEARNED INFORMATION (EUROPE) LIMITED | 01079292 | 29/02/2000 | 07/02/2007 | Dissolved |
| VNU BUSINESS PUBLICATIONS LTD. | 01513633 | 22/02/1996 | 07/02/2007 | Dissolved |
| VNU HOLDCO (U.K.) LIMITED | 04219480 | 31/07/2001 | 31/03/2008 | Dissolved |
| Vnu Business Media Europe Ltd | 03828537 | 16/08/1999 | 31/03/2008 | Dissolved |