| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Alistair Tucker, Halcrow & Associates Ltd. | 01734270 | 24/12/1991 | Dissolved |
| Halcrow (Offshore) | 01453599 | 15/11/1991 | Dissolved |
| Mott-Halcrow Ltd | 01745794 | 01/11/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HALCROW CONSULTING LIMITED | 02326761 | 15/11/1991 | 30/04/1995 | One Red Flag |
| HALCROW HOLDINGS LIMITED | 01674044 | 06/09/1991 | 30/04/1995 | One Red Flag |
| HALCROW STAFF AND SERVICES | 01193727 | 15/11/1992 | 05/04/1995 | Dissolved |
| Halcrow Properties Ltd | 02702093 | 13/04/1992 | 30/04/1995 | Dissolved |
| S W H P Ltd | 01244911 | 15/11/1991 | 30/04/1995 | Dissolved |
| SIR WILLIAM HALCROW & PARTNERS LIMITED | 01722541 | 15/11/1991 | 30/04/1995 | Strike Off |
| Severn (Cheam) Ltd | 01553870 | 24/10/1991 | 30/04/1995 | Dissolved |
| Sir William Halcrow & Partners (Greece) Ltd | 02363479 | 06/04/1993 | 30/04/1995 | Dissolved |
| Vineyard House Ltd | 01586245 | 15/11/1991 | 30/04/1995 | Dissolved |