| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ECONOMIC MEDIA BULLETIN LIMITED | 07028578 | 06/04/2010 | Silver |
| NNA EUROPE LIMITED | 07453375 | 29/11/2010 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DEVELOPMENT CONTROL SERVICES LIMITED | 03308437 | 07/09/2000 | 01/10/2007 | Dissolved |
| HAYMARKET BUSINESS MEDIA LTD. | 01358151 | 02/07/2004 | 31/12/2009 | Dissolved |
| HAYMARKET BUSINESS PUBLICATIONS LIMITED | 01468220 | 30/04/1993 | 01/03/2007 | Dissolved |
| HAYMARKET MEDIA GROUP LTD. | 00267189 | 28/01/2004 | 31/12/2009 | Silver |
| HAYMARKET MEDICAL PUBLICATIONS LTD. | 01472289 | 18/12/1998 | 03/11/2008 | Silver |
| HAYMARKET NETWORK LIMITED | 00834207 | 06/11/2000 | 31/12/2009 | Dissolved |
| HAYMARKET WORLDWIDE LIMITED | 00855308 | 09/06/2000 | 01/03/2007 | Not Trading |
| Haymarket Campaign Publications Ltd. | 00679500 | 01/11/2001 | 01/10/2007 | Dissolved |
| Haymarket Interactive Ltd | 01911243 | 03/07/1996 | 16/09/2004 | Dissolved |
| Haymarket Management Publications Ltd | 00801888 | 14/04/1997 | 01/10/2007 | Dissolved |
| Haymarket Marketing Publications Ltd | 01810242 | 10/10/1992 | 01/10/2007 | Dissolved |
| Haymarket Professional Publications Ltd. | 00475888 | 01/11/2001 | 01/10/2007 | Dissolved |
| MANAGEMENT PUBLICATIONS LIMITED | 00869557 | 17/12/2003 | 31/12/2009 | Dissolved |
| MRM WORLDWIDE (UK) LIMITED | 02507164 | 25/01/1995 | 04/12/1998 | Bronze |
| PLANNING PUBLICATIONS LIMITED | 03308435 | 03/02/1997 | 01/10/2007 | Dissolved |
| PR PUBLICATIONS LIMITED | 01813135 | 18/12/1998 | 31/12/2009 | Not Trading |
| PRESSXCHANGE.COM LIMITED | 03992902 | 27/02/2007 | 01/10/2008 | Gold |
| PROFESSIONAL PUBLISHERS ASSOCIATION LTD | 00132310 | 24/01/2001 | 01/02/2010 | Bronze |
| Tpd Group Ltd | 03172083 | 04/12/1998 | 30/11/2000 | Dissolved |
| URDGRUP LIMITED | 07520049 | 08/04/2011 | 02/03/2022 | Bronze |
| WEST COAST PUBLISHING LIMITED | 03792015 | 26/10/1999 | 01/10/2007 | Dissolved |