| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| D & C (Brentford) Ltd | 01666115 | 31/12/1992 | Dissolved |
| Duffy & Carr (Developments) Ltd | 01539956 | 31/05/1992 | Dissolved |
| Duffy & Carr (Small Works) Ltd | 01324065 | 31/12/1991 | Dissolved |
| Duffy & Carr Ltd | 01666116 | 28/03/1992 | Dissolved |
| Duffy General Contracts Ltd | 03027401 | 28/02/1995 | Dissolved |
| Forflight Ltd. | 02897404 | 11/02/1994 | Dissolved |
| Sallis & Haider Ltd | 01907395 | 30/09/1992 | Dissolved |
| West London Diamond Drilling Ltd | 02259754 | 31/12/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Brightdale Ltd | 01580008 | 31/12/1991 | 04/08/1992 | Dissolved |
| CUBITT BUILDING & INTERIORS LIMITED | 03666633 | 12/11/1998 | 23/02/2005 | Dissolved |
| DUFFY CONSTRUCTION LIMITED | 01302042 | 31/08/1992 | 23/02/2005 | Bronze |
| DUFFY CONTRACT SERVICES LIMITED | 02391006 | 31/12/1992 | 23/02/2005 | Two Red Flags |
| DUFFY GROUP LIMITED | 02495020 | 23/04/1992 | 23/02/2005 | Bronze |
| Regalpark Ltd | 01452023 | 31/03/1992 | 04/08/1992 | Dissolved |
| WELLS PLANT HIRE LIMITED | 01271937 | 31/12/1992 | 23/02/2005 | One Red Flag |