| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 51 ENNISMORE GARDENS MANAGEMENT CO., (1981) LIMITED | 01598334 | 29/05/1991 | Not Trading |
| FORTRESS HOLDINGS PLC | 00414086 | 05/06/1996 | Dissolved |
| The Fortress Trust Plc | 02343820 | 04/04/1992 | Dissolved |
| The New Fortress Trust Plc | 03109630 | 18/12/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HERTFORDSHIRE BUILDING PRESERVATION TRUST LIMITED | 00783226 | 18/09/2001 | 14/11/2013 | Silver |
| INSTITUTE OF PSYCHIATRY (THE) | 00489266 | 23/03/1991 | 31/07/1997 | Dissolved |
| Pre-Met Electrical Components Ltd | 00461267 | 17/04/1998 | 16/11/1999 | Dissolved |
| Pre-Met Engineering Co. Ltd | 01349192 | 24/04/1998 | 16/11/1999 | Dissolved |
| RENEURON LIMITED | 03375897 | 18/07/1997 | 11/07/2000 | Insolvent |