| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| JICPATS LIMITED | 08814964 | 13/12/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 99 ST MARKS ROAD MANAGEMENT COMPANY LIMITED | 03202003 | 22/05/1996 | 01/08/1997 | Bronze |
| ALMEIDA THEATRE COMPANY LIMITED | 01546033 | 15/09/2005 | 27/11/2013 | Silver |
| AUDIT BUREAU OF CIRCULATIONS LIMITED | 00259647 | 25/09/2015 | 25/02/2016 | Silver |
| HAYMARKET BUSINESS MEDIA LTD. | 01358151 | 01/03/2007 | 31/12/2008 | Dissolved |
| HAYMARKET MEDIA GROUP LTD. | 00267189 | 25/01/2008 | 31/12/2008 | Silver |
| Haymarket Management Publications Ltd | 00801888 | 06/11/2000 | 01/10/2007 | Dissolved |
| INSTITUTE OF MASTERS OF WINE(THE) | 01059707 | 29/04/2019 | 02/01/2020 | Bronze |
| JT-PATS LIMITED | 08814968 | 13/12/2013 | 07/10/2016 | Gold |
| MASTERS OF WINE ENDOWMENT COMPANY | 06018769 | 29/04/2019 | 02/01/2020 | Bronze |
| MULTIPLE SCLEROSIS SOCIETY | 07451571 | 01/01/2019 | 13/09/2020 | Silver |
| NEWSWORKS | 04618606 | 01/05/2012 | 07/10/2016 | Bronze |
| PUBLISHERS AUDIENCE MEASUREMENT COMPANY LIMITED | 09576666 | 06/05/2015 | 26/10/2016 | Gold |
| THE NEWSPAPER MARKETING AGENCY | 08073656 | 17/05/2012 | 07/10/2016 | Amber |
| THE PARK THEATRE | 07091161 | 16/05/2018 | 05/12/2023 | Bronze |
| WARC LIMITED | 03383627 | 22/01/2009 | 31/07/2011 | Dissolved |
| WESTBOURNE PARK MANAGEMENT LIMITED | 02636208 | 08/08/1991 | 01/10/1991 | Dissolved |