| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 2-6 TAMWORTH STREET SW6 FREEHOLD LIMITED | 08735969 | 27/11/2013 | Bronze |
| Colford Ltd | 03429945 | 22/09/1997 | Dissolved |
| Dartcharm Limited | 01967463 | 31/07/1992 | Dissolved |
| ELEANOR JANE LIMITED | 06247807 | 15/05/2007 | Dissolved |
| HISTORIC HOUSES FOUNDATION | 05433717 | 22/04/2005 | Silver |
| SERIOUSLY SMART LIMITED | 03615376 | 13/08/1998 | Not Trading |
| THE ENORMOUS HANDKERCHIEF COMPANY LIMITED | 05287359 | 07/12/2004 | Dissolved |
| TRULY SPECTACULAR LIMITED | 03974550 | 17/04/2000 | Dissolved |
| WARDINGTON LIMITED | 06247786 | 15/05/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FRITTON LAKE LIMITED | 01414849 | 07/12/1991 | 12/05/1997 | One Red Flag |
| FRITTON LAKE LIMITED | 01414849 | 07/12/1991 | 12/05/1997 | One Red Flag |
| HISTORIC HOUSES ASSOCIATION | 02001057 | 25/11/1992 | 08/12/1993 | Silver |
| M & G PRESENTS LIMITED | 04557222 | 09/10/2002 | 08/06/2017 | Dissolved |
| SULGRAVE MANOR TRADING COMPANY LIMITED | 03768382 | 25/10/2002 | 23/01/2019 | Silver |
| THE SULGRAVE MANOR TRUST | 02627034 | 25/10/2002 | 23/01/2019 | Silver |