| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EMISSIONS ANALYTICS LIMITED | 07576124 | 27/05/2011 | One Red Flag |
| EVRO PUBLISHING LIMITED | 08772578 | 13/11/2013 | Silver |
| GRAMOPHONE PUBLICATIONS LIMITED | 00319998 | 07/07/1999 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CAR ACCESSORY TRADER LIMITED | 01398780 | 10/10/1992 | 01/10/2007 | Dissolved |
| CHELSEA AUTOLEGENDS LTD | 07090325 | 13/06/2010 | 29/11/2011 | Dissolved |
| Engels (No.2) Ltd | 03775637 | 28/01/2000 | 19/07/2002 | Dissolved |
| HAYMARKET BUSINESS MEDIA LTD. | 01358151 | 01/03/2007 | 26/11/2008 | Dissolved |
| HAYMARKET BUSINESS PUBLICATIONS LIMITED | 01468220 | 06/11/2000 | 26/11/2008 | Dissolved |
| HAYMARKET CONSUMER MEDIA LTD. | 01539034 | 10/10/1992 | 26/11/2008 | Not Trading |
| HAYMARKET EXHIBITIONS LIMITED | 02457048 | 03/08/1993 | 26/11/2008 | Dissolved |
| HAYMARKET FINANCE LIMITED | 01468303 | 05/01/2004 | 26/11/2008 | Dissolved |
| HAYMARKET GROUP LIMITED | 02809261 | 14/06/2001 | 28/11/2008 | Silver |
| HAYMARKET GROUP PROPERTIES LIMITED | 01469098 | 05/01/2004 | 26/11/2008 | Dissolved |
| HAYMARKET MEDIA GROUP LTD. | 00267189 | 10/10/1996 | 30/06/2009 | Silver |
| HAYMARKET MEDICAL PUBLICATIONS LTD. | 01472289 | 06/11/2000 | 03/11/2008 | Silver |
| HAYMARKET NETWORK LIMITED | 00834207 | 10/10/1992 | 26/11/2008 | Dissolved |
| HAYMARKET PUBLISHING SERVICES LIMITED | 00813651 | 17/11/2004 | 26/11/2008 | Bronze |
| HAYMARKET WORLDWIDE LIMITED | 00855308 | 09/06/2000 | 26/11/2008 | Not Trading |
| Haymarket Autosport & Classic Publications Ltd | 00979380 | 10/10/1996 | 01/10/2007 | Dissolved |
| Haymarket Consumer Publications Ltd | 01020739 | 10/10/1996 | 01/10/2007 | Dissolved |
| Haymarket Interactive Ltd | 01911243 | 30/04/1993 | 01/10/2007 | Dissolved |
| Haymarket Motorcycle Publications Ltd | 04576957 | 11/11/2002 | 01/10/2007 | Dissolved |
| Haymarket Motoring Publications Ltd | 00215720 | 10/10/1992 | 01/10/2007 | Dissolved |
| Haymarket Specialist Publications Ltd | 00111341 | 10/10/1992 | 01/10/2007 | Dissolved |
| INTUITION COMMUNICATION HOLDINGS LIMITED | 08486327 | 03/07/2013 | 21/12/2016 | Dissolved |
| L.A.T. Photographic & Typographic Ltd | 00311279 | 10/10/1996 | 01/10/2007 | Dissolved |
| PROFESSIONAL PUBLISHERS ASSOCIATION LTD | 00132310 | 27/09/2001 | 26/02/2009 | Bronze |
| RIVER STREET EVENTS LIMITED | 02708675 | 04/07/2001 | 26/11/2008 | One Red Flag |
| Teesdale Publications Ltd | 03049145 | 10/10/1996 | 01/10/2007 | Dissolved |
| Teesdale Publishing Co Ltd | 00328987 | 10/10/1996 | 08/11/2006 | Dissolved |
| The Lincoln's Inn Press Ltd | 00271457 | 10/10/1996 | 08/11/2006 | Dissolved |
| The Ravenhill Publishing Co Ltd | 00642544 | 10/10/1996 | 08/11/2006 | Dissolved |