| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Caroline Blunt Shoes Ltd | 03746656 | 10/08/1999 | Dissolved |
| Commedia Dell'arte | 04235077 | 12/02/2002 | Dissolved |
| First Legist (C H) Trustees Ltd | 01292670 | 04/06/2001 | Dissolved |
| First Legist (C H) Trustees Ltd | 01292670 | 25/04/2001 | Dissolved |
| Samuel & Russell Kent Ltd | 02083616 | 31/12/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASSOCIATION OF LEADING VISITOR ATTRACTIONS | 02487808 | 21/09/2012 | 18/02/2015 | Silver |
| BRIDESHEAD GOLF & COUNTRY CLUB LIMITED | 02550680 | 07/12/2007 | 29/04/2016 | Not Trading |
| BRIDESHEAD GOLF & COUNTRY CLUB LIMITED | 02550680 | 22/10/1991 | 29/04/2016 | Not Trading |
| CASTLE HOWARD ARBORETUM TRUST | 03006258 | 05/01/1995 | 25/02/2016 | Gold |
| CASTLE HOWARD ESTATE LIMITED | 00480214 | 01/09/1991 | 29/04/2016 | Silver |
| CASTLE HOWARD INVESTMENTS LIMITED | 01461564 | 04/06/2001 | 29/04/2016 | Not Trading |
| CASTLE HOWARD INVESTMENTS LIMITED | 01461564 | 25/04/2001 | 29/04/2016 | Not Trading |
| CONEYSTHORPE TRUSTEES LIMITED | 01461054 | 04/06/2001 | 29/04/2016 | Not Trading |
| CONEYSTHORPE TRUSTEES LIMITED | 01461054 | 25/04/2001 | 29/04/2016 | Not Trading |
| GRANGE FARM (BULMER) LIMITED | 01248441 | 27/11/1991 | 30/01/2004 | Silver |
| HISTORIC HOUSES ASSOCIATION | 02001057 | 27/03/1996 | 01/05/2016 | Silver |
| HOWARD TRUSTEES LIMITED | 01462936 | 04/06/2001 | 29/04/2016 | Not Trading |
| HOWARD TRUSTEES LIMITED | 01462936 | 25/04/2001 | 29/04/2016 | Not Trading |