| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HALCROW WATERMAN LIMITED | SC176135 | 12/01/2015 | Dissolved |
| SIR WILLIAM HALCROW & PARTNERS (MALAYSIA) LIMITED | 02314593 | 12/01/2015 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BROADLAND ENVIRONMENTAL SERVICES LIMITED | 03683242 | 23/11/2011 | 01/08/2013 | Silver |
| BURDEROP INVESTMENTS LIMITED | 02485284 | 12/01/2015 | 21/06/2017 | Dissolved |
| CROUCH HOGG WATERMAN LIMITED | SC136186 | 12/01/2015 | 21/06/2017 | Dissolved |
| HALCROW (CONSULTING ENGINEERS & ARCHITECTS) LIMITED | 01045458 | 12/01/2015 | 21/06/2017 | Amber |
| HALCROW ASIA LIMITED | 02458827 | 12/01/2015 | 21/06/2017 | Bronze |
| HALCROW ASIA PARTNERSHIP LIMITED | 02490667 | 12/01/2015 | 21/06/2017 | Amber |
| HALCROW CANADA LIMITED | 05296410 | 12/01/2015 | 21/06/2017 | Dissolved |
| HALCROW CONSULTING LIMITED | 02326761 | 12/01/2015 | 21/06/2017 | Amber |
| HALCROW GILBERT ASSOCIATES LIMITED | 02312495 | 12/01/2015 | 21/06/2017 | Dissolved |
| HALCROW GROUP LIMITED | 03415971 | 12/01/2015 | 03/06/2019 | Amber |
| HALCROW HOLDINGS LIMITED | 01674044 | 12/01/2015 | 21/06/2017 | Bronze |
| HALCROW INTERNATIONAL LIMITED | 02326765 | 12/01/2015 | 21/06/2017 | Amber |
| HALCROW INTERNATIONAL PARTNERSHIP | 02809680 | 12/01/2015 | 21/06/2017 | Amber |
| HALCROW RAIL APPROVALS LIMITED | 05079753 | 29/05/2013 | 21/06/2017 | Dissolved |
| HALCROW WATER SERVICES LIMITED | 03055857 | 12/01/2015 | 21/06/2017 | Dissolved |
| MECHANICAL AND ELECTRICAL DESIGN ASSOCIATES LIMITED | 00878811 | 12/01/2015 | 21/06/2017 | Dissolved |
| SIR WILLIAM HALCROW & PARTNERS LIMITED | 01722541 | 12/01/2015 | 21/06/2017 | Strike Off |
| TRANSMARK ASIA LIMITED | 02815214 | 12/01/2015 | 21/06/2017 | Bronze |
| YOLLES PARTNERSHIP LIMITED | 02333623 | 12/01/2015 | 21/06/2017 | Dissolved |