| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Halcap Ltd | 04084054 | 05/10/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BERRY BROOK HOMES LIMITED | 07105213 | 05/01/2011 | 09/02/2011 | Bronze |
| BRITISH EXPERTISE | 00896430 | 12/12/2002 | 30/06/2007 | Amber |
| BRITISH WATER | 03953229 | 22/10/2003 | 14/06/2006 | Gold |
| CROUCH HOGG WATERMAN LIMITED | SC136186 | 19/06/1997 | 29/06/2007 | Dissolved |
| HALCROW CONSULTING LIMITED | 02326761 | 20/09/2002 | 29/06/2007 | One Red Flag |
| HALCROW FOUNDATION | 05593409 | 14/10/2005 | 29/06/2007 | Silver |
| HALCROW GILBERT ASSOCIATES LIMITED | 02312495 | 15/07/1996 | 29/06/2007 | Dissolved |
| HALCROW GROUP LIMITED | 03415971 | 03/04/1998 | 29/06/2007 | Amber |
| HALCROW H&S LIMITED | 02288955 | 15/11/1991 | 11/01/1994 | Dissolved |
| HALCROW HOLDINGS LIMITED | 01674044 | 01/02/1997 | 29/06/2007 | One Red Flag |
| HALCROW INTERNATIONAL LIMITED | 02326765 | 20/09/2002 | 29/06/2007 | Amber |
| HALCROW INTERNATIONAL PARTNERSHIP | 02809680 | 20/09/2002 | 29/06/2007 | Amber |
| HALCROW MANAGEMENT SCIENCES LIMITED | 02770883 | 30/04/1999 | 31/05/2007 | Dissolved |
| HALCROW RURAL MANAGEMENT LIMITED | 02603242 | 01/04/1999 | 29/06/2007 | Dissolved |
| HALCROW WATER SERVICES LIMITED | 03055857 | 27/01/2000 | 06/12/2002 | Dissolved |
| HALCROW WATERMAN LIMITED | SC176135 | 03/06/1997 | 29/06/2007 | Dissolved |
| OPPORTUNITY PETERBOROUGH LIMITED | 05377004 | 01/09/2007 | 14/11/2008 | Silver |
| SAINT JOSEPH'S CATHOLIC PRIMARY SCHOOL, DEVIZES | 07734205 | 24/01/2012 | 31/12/2013 | Amber |
| SIR WILLIAM HALCROW & PARTNERS LIMITED | 01722541 | 15/11/1991 | 29/06/2007 | Dissolved |
| SIR WILLIAM HALCROW & PARTNERS SCOTLAND LIMITED | SC142384 | 03/06/1997 | 29/06/2007 | Dissolved |
| TRANSMARK (CONSULTANTS) LIMITED | 01048112 | 09/01/2002 | 29/06/2007 | Dissolved |
| TRANSMODE LIMITED | 01118784 | 09/01/2002 | 29/06/2007 | Dissolved |