| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CATTERICK RACECOURSE COMPANY LIMITED(THE) | 00188739 | 23/11/1991 | Silver |
| CATTERICK RACECOURSE COMPANY LIMITED(THE) | 00188739 | 20/10/1991 | Silver |
| Doncaster Racecourse Ltd | 03014343 | 01/08/1996 | Dissolved |
| Doncaster Racecourse Ltd | 03014343 | 20/06/1995 | Dissolved |
| INTERCONTINENTAL RACING LIMITED | 02815227 | 01/01/1998 | Dissolved |
| INTERNATIONAL CHALLENGE RACING LIMITED | 03573256 | 17/07/1998 | One Red Flag |
| INTERNATIONAL CHALLENGE RACING LIMITED | 03573256 | 17/07/1998 | One Red Flag |
| INTERNATIONAL RACING MEDIA LIMITED | 03155661 | 21/06/1996 | Gold |
| IRM (EVENT SAFETY AND SECURITY) LTD | 05875265 | 14/05/2021 | Gold |
| Interactive Racing Media .Com Ltd | 03885238 | 24/11/1999 | Dissolved |
| International Racing Media .Com Ltd | 03885284 | 24/11/1999 | Dissolved |
| Joyglass Limited | 01874175 | 31/03/1993 | Dissolved |
| Mainever Limited | 02257061 | 01/11/1991 | Dissolved |
| Mountebor Ltd | 02055267 | 02/05/1991 | Dissolved |
| RACING UK HOLDINGS LIMITED | 05069308 | 01/08/2006 | Dissolved |
| REDCAR RACECOURSE LIMITED | 00009592 | 21/10/2008 | Bronze |
| Stonygarth Securities Ltd. | 02831693 | 07/10/1993 | Dissolved |
| THIRSK RACECOURSE LIMITED | 00193619 | 31/07/1991 | Silver |
| WETHERBY STEEPLECHASE COMMITTEE,LIMITED | 00169377 | 04/06/1999 | Gold |
| WETHERBY STEEPLECHASE COMMITTEE,LIMITED | 00169377 | 10/04/1991 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRITISH HORSERACING AUTHORITY LIMITED | 02813358 | 07/06/1993 | 30/09/1999 | Gold |
| INTERNATIONAL RACING MEDIA LIMITED | 03155661 | 21/06/1996 | 06/01/2005 | Gold |
| IRM (EVENT SAFETY AND SECURITY) LTD | 05875265 | 13/07/2006 | 12/02/2014 | Gold |
| RACECOURSE TECHNICAL SERVICES LIMITED | 00422837 | 04/08/1994 | 23/04/2004 | Silver |
| RACECOURSE TELEVISION SERVICES LIMITED | 04556330 | 19/02/2003 | 25/05/2005 | Dissolved |
| RACING UK HOLDINGS LIMITED | 05069308 | 24/03/2004 | 24/08/2004 | Dissolved |
| REDCAR RACECOURSE LIMITED | 00009592 | 01/02/1996 | 31/12/2005 | Bronze |
| RMG OPERATIONS LIMITED | 04809913 | 24/03/2004 | 24/08/2004 | Silver |
| Super 12 Racing Ltd | 04125304 | 28/02/2001 | 04/06/2009 | Dissolved |
| TANDEM GROUP PLC | 00616818 | 30/06/1998 | 03/03/1999 | Silver |
| THE RACECOURSE ASSOCIATION LIMITED | 00093447 | 01/06/1996 | 01/09/2003 | Silver |