| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Halcrow McLachlan Ltd | 02338761 | 23/07/1992 | Dissolved |
| Halcrow Partnership Administration Limited | 02845480 | 09/09/1993 | Dissolved |
| Halcrow Properties Ltd | 02702093 | 01/05/1995 | Dissolved |
| S W H P Ltd | 01244911 | 15/11/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRITISH EXPERTISE | 00896430 | 16/12/1999 | 01/09/2002 | Amber |
| HALCROW CONSULTING LIMITED | 02326761 | 01/05/1995 | 20/09/2002 | Amber |
| HALCROW GROUP LIMITED | 03415971 | 03/04/1998 | 20/09/2002 | Amber |
| HALCROW H&S LIMITED | 02288955 | 01/05/1996 | 01/02/1997 | Dissolved |
| HALCROW HOLDINGS LIMITED | 01674044 | 06/09/1991 | 20/09/2002 | Bronze |
| HALCROW INTERNATIONAL LIMITED | 02326765 | 01/05/1996 | 20/09/2002 | Amber |
| HALCROW INTERNATIONAL PARTNERSHIP | 02809680 | 15/04/1993 | 20/09/2002 | Amber |
| HALCROW PENSION TRUSTEES LIMITED | 09800314 | 29/09/2015 | 19/07/2017 | Dissolved |
| HALCROW STAFF AND SERVICES | 01193727 | 05/04/1995 | 20/04/1999 | Dissolved |
| SIR WILLIAM HALCROW & PARTNERS (MALAYSIA) LIMITED | 02314593 | 01/05/1996 | 01/09/1997 | Dissolved |
| SIR WILLIAM HALCROW & PARTNERS LIMITED | 01722541 | 15/11/1991 | 20/09/2002 | Strike Off |