| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| FIRST ONDEMAND LIMITED | 05155467 | 27/04/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BARRETT BROTHERS (LONDON) LIMITED | 00258384 | 18/05/1991 | 30/09/1999 | Dissolved |
| CLARION EVENTS LIMITED | 00454826 | 18/05/1991 | 30/09/1999 | Two Red Flags |
| EARLS COURT & OLYMPIA CATERING COMPANY LIMITED | 00554249 | 18/05/1992 | 30/09/1999 | Dissolved |
| ECANDO SYSTEMS LIMITED | 00653052 | 18/05/1992 | 30/09/1999 | Dissolved |
| EXHIBITION VENUES LIMITED | 00557278 | 18/05/1992 | 30/09/1999 | Dissolved |
| EXPO 2007 REALISATIONS LIMITED | 04076536 | 27/09/2000 | 31/07/2002 | Dissolved |
| FEMSTON LIMITED | 01267307 | 18/05/1991 | 30/09/1999 | Dissolved |
| GILTSPUR INTERNATIONAL LIMITED | 00357995 | 14/08/1992 | 30/09/1999 | Dissolved |
| ID EXHIBITIONS LIMITED | 02654612 | 16/10/1992 | 24/12/1993 | Dissolved |
| OLYMPIA EXHIBITIONS LIMITED | 01103492 | 18/05/1991 | 30/09/1999 | Dissolved |
| OLYMPIA LIMITED | 00661157 | 18/05/1992 | 30/09/1999 | Silver |
| OLYMPIA MANAGEMENT SERVICES LIMITED | 00238811 | 18/05/1992 | 30/09/1999 | Bronze |
| OPEX EXHIBITIONS LIMITED | 02714189 | 11/08/1992 | 30/09/1999 | Dissolved |
| Olympia Conferences Ltd | 00085506 | 18/05/1992 | 30/09/1999 | Dissolved |
| Opex 2001 Ltd | 02714186 | 14/07/1992 | 30/09/1999 | Dissolved |
| Opex Exhibitions (Argentina) Ltd | 03327078 | 27/02/1997 | 30/09/1999 | Dissolved |
| REAL TIME EVENTS LIMITED | 02879325 | 25/10/1994 | 31/03/1996 | Dissolved |
| SNOOZEBOX HOLDINGS PLC | 08013887 | 14/01/2013 | 09/11/2017 | Dissolved |
| Showprops Ltd | 00580792 | 18/05/1991 | 30/09/1999 | Dissolved |
| TARSUS GROUP LIMITED | 02000544 | 04/03/2004 | 28/12/2009 | One Red Flag |
| THE ENVIRONMENT, WILDLIFE AND CONSERVATION EXHIBITION AND CONFERENCE L | 02616439 | 27/06/1991 | 30/09/1999 | Dissolved |
| The London Furniture Show Co Ltd | 03039748 | 23/07/1995 | 30/09/1999 | Dissolved |