| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| WSP EUROPE LIMITED | 04113909 | 30/11/2001 | Dissolved |
| WSP FINANCE ONE LIMITED | 07868915 | 02/12/2011 | Dissolved |
| WSP FINANCE TWO LIMITED | 07868943 | 02/12/2011 | Dissolved |
| WSP FUTURE ENERGY LIMITED | 02486605 | 08/04/1997 | Dissolved |
| WSP U.S. HOLDINGS LIMITED | 06455790 | 25/09/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AB CONSULTING LIMITED | 01091265 | 31/12/1996 | 20/10/2014 | Dissolved |
| ASHTEAD GROUP PUBLIC LIMITED COMPANY | 01807982 | 01/01/2002 | 11/09/2018 | Silver |
| ASSOCIATED BRITISH CONSULTANTS (TRUSTEES) LIMITED | 02798510 | 01/01/1999 | 20/10/2014 | Dissolved |
| BAS CONSULTANCY LIMITED | 02876729 | 25/02/1994 | 20/10/2014 | Dissolved |
| BUSINESS TECHNOLOGY 1999 LIMITED | 01094984 | 07/04/2000 | 20/10/2014 | Dissolved |
| CANTOR SEINUK UK LIMITED | 03637612 | 06/05/2009 | 20/10/2014 | Dissolved |
| COODE & PARTNERS | 00619356 | 08/04/1997 | 20/10/2014 | Dissolved |
| COODE BLIZARD LIMITED | 01860771 | 08/04/1997 | 20/10/2014 | Dissolved |
| DULCIMA LIMITED | 02054558 | 01/06/1994 | 20/10/2014 | Dissolved |
| EDUNOVA LIMITED | 05411768 | 26/04/2005 | 20/10/2014 | Dissolved |
| EDUNOVA PARTNERSHIP LIMITED | 05247332 | 16/11/2011 | 20/10/2014 | Dissolved |
| FINANCIAL DECISIONS LIMITED | 02108267 | 18/05/1991 | 20/10/2014 | Dissolved |
| FLACK + KURTZ (UK) LIMITED | 04127507 | 02/02/2004 | 20/10/2014 | Dissolved |
| GRAHAM CONSULTING GROUP LIMITED | 02428039 | 08/04/1997 | 20/10/2014 | Dissolved |
| INTEGRATED BUILDING SERVICES DESIGN PARTNERSHIP LIMITED | 02606296 | 28/07/2005 | 20/10/2014 | Dissolved |
| K F TEROTECHNOLOGY LIMITED | 02812983 | 01/01/1999 | 20/10/2014 | Dissolved |
| KENCHINGTON FORD LIMITED | 01093379 | 31/12/1995 | 20/10/2014 | Dissolved |
| M. D. E. S. LIMITED | 00165724 | 14/03/1994 | 20/10/2014 | Dissolved |
| O'SULLIVAN & GRAHAM LIMITED | 01753335 | 08/04/1997 | 20/10/2014 | Dissolved |
| PARSONS BROWN HOLDINGS LIMITED | 01046959 | 05/05/1992 | 20/10/2014 | Dissolved |
| PARSONS BROWN LONDON LIMITED. | 01046958 | 31/12/1998 | 20/10/2014 | Dissolved |
| PARSONS BROWN READING LIMITED | 01283651 | 31/12/1998 | 20/10/2014 | Dissolved |
| RAVENSCROFT ESTATES LIMITED | 02592361 | 30/03/1994 | 20/10/2014 | Dissolved |
| The Health Equation Ltd | 04851817 | 05/10/2004 | 26/06/2006 | Dissolved |
| WATTRID LIMITED | 02866111 | 26/11/1997 | 20/10/2014 | Dissolved |
| WSP (US) FINANCE LIMITED | 07004340 | 20/12/2013 | 20/10/2014 | Dissolved |
| WSP BUILDINGS LIMITED | 02859678 | 08/10/1993 | 20/10/2014 | Dissolved |
| WSP CEL LIMITED | 03877626 | 07/11/2007 | 20/10/2014 | Dissolved |
| WSP CENTRAL LIMITED | 02813033 | 31/12/1998 | 20/10/2014 | Dissolved |
| WSP CIVILS LIMITED | 02430067 | 18/12/2007 | 20/10/2014 | Dissolved |
| WSP COMMUNICATIONS LIMITED | 02363466 | 31/12/1998 | 20/10/2014 | Dissolved |
| WSP CONSULTING ENGINEERS (SCOTLAND) LIMITED | SC142027 | 08/01/1993 | 20/10/2014 | Dissolved |
| WSP DEVELOPMENT AND TRANSPORTATION LIMITED | 02382309 | 17/12/2007 | 20/10/2014 | Dissolved |
| WSP ENERGY LIMITED | 02862489 | 14/10/1993 | 20/10/2014 | Dissolved |
| WSP EUROPEAN HOLDINGS LIMITED | 04121721 | 11/07/2001 | 20/10/2014 | Gold |
| WSP FULCRUM LIMITED | 02584791 | 10/07/2000 | 20/10/2014 | Dissolved |
| WSP GROUP HOLDINGS LIMITED | 07773599 | 14/09/2011 | 20/10/2014 | Silver |
| WSP GROUP INTERNATIONAL LIMITED | 02731628 | 31/12/1998 | 09/12/2003 | Dissolved |
| WSP GROUP LIMITED | 02136404 | 18/05/1991 | 20/10/2014 | Gold |
| WSP JAMES LIMITED | 02362376 | 21/06/1995 | 20/10/2014 | Dissolved |
| WSP KNOWLEDGE SOLUTIONS LIMITED | 02890341 | 17/12/2007 | 20/10/2014 | Dissolved |
| WSP LONDON LIMITED | 02813014 | 31/12/1998 | 20/10/2014 | Dissolved |
| WSP MANAGEMENT CONSULTANTS LIMITED | 05391063 | 17/12/2007 | 20/10/2014 | Strike Off |
| WSP MANAGEMENT SERVICES LIMITED | 02454665 | 01/08/1995 | 20/10/2014 | Silver |
| WSP MIDLANDS LIMITED | 02753617 | 31/12/1998 | 20/10/2014 | Dissolved |
| WSP NORTH LIMITED | 02257665 | 01/01/1999 | 20/10/2014 | Dissolved |
| WSP SCOTLAND LIMITED | 02813106 | 31/12/1998 | 20/10/2014 | Dissolved |
| WSP SOUTH & WEST LIMITED | 00950554 | 31/12/1998 | 20/10/2014 | Dissolved |
| WSP SPECIAL PROJECTS LIMITED | 02368173 | 01/01/1999 | 20/10/2014 | Dissolved |
| WSP SUSTAINABLE ENERGY LIMITED | 05957477 | 27/10/2006 | 20/10/2014 | Dissolved |
| WSP SYSTEMS LIMITED | 02395826 | 03/06/2003 | 20/10/2014 | Dissolved |
| WSP UK LIMITED | 01383511 | 01/01/1999 | 20/10/2014 | Gold |