| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ASSOCIATED BRITISH CONSULTANTS (TRUSTEES) LIMITED | 02798510 | 20/10/2014 | Dissolved |
| BAS CONSULTANCY LIMITED | 02876729 | 20/10/2014 | Dissolved |
| BUSINESS TECHNOLOGY 1999 LIMITED | 01094984 | 20/10/2014 | Dissolved |
| CANTOR SEINUK UK LIMITED | 03637612 | 20/10/2014 | Dissolved |
| CHARTERHOUSE BUILDING SERVICES LTD | 03038572 | 30/03/2011 | Dissolved |
| COODE & PARTNERS | 00619356 | 20/12/2013 | Dissolved |
| COODE BLIZARD LIMITED | 01860771 | 20/10/2014 | Dissolved |
| DULCIMA LIMITED | 02054558 | 20/10/2014 | Dissolved |
| EDUNOVA LIMITED | 05411768 | 20/10/2014 | Dissolved |
| EDUNOVA PARTNERSHIP LIMITED | 05247332 | 20/10/2014 | Dissolved |
| ENVIRONMENTAL AND REMEDIATION SERVICES LIMITED | 05132606 | 01/05/2015 | Dissolved |
| FLACK + KURTZ (UK) LIMITED | 04127507 | 20/10/2014 | Dissolved |
| K F TEROTECHNOLOGY LIMITED | 02812983 | 20/10/2014 | Dissolved |
| KENCHINGTON FORD LIMITED | 01093379 | 20/10/2014 | Dissolved |
| M. D. E. S. LIMITED | 00165724 | 20/10/2014 | Dissolved |
| O'SULLIVAN & GRAHAM LIMITED | 01753335 | 20/10/2014 | Dissolved |
| PARSONS BRINCKERHOFF GROUP EMPLOYMENT LIMITED | 09193526 | 09/04/2015 | Dissolved |
| PARSONS BRINCKERHOFF GROUP HOLDINGS LTD | 03515454 | 31/07/2016 | Dissolved |
| PARSONS BRINCKERHOFF INVESTMENTS LIMITED | 03599313 | 31/07/2016 | Dissolved |
| PARSONS BRINCKERHOFF OVERSEAS HOLDINGS LTD | 02678235 | 31/07/2016 | Dissolved |
| PARSONS BROWN HOLDINGS LIMITED | 01046959 | 20/10/2014 | Dissolved |
| PARSONS BROWN LONDON LIMITED. | 01046958 | 20/10/2014 | Dissolved |
| PARSONS BROWN READING LIMITED | 01283651 | 20/10/2014 | Dissolved |
| PB FOUNDATION | 04381297 | 31/07/2016 | Dissolved |
| RAVENSCROFT ESTATES LIMITED | 02592361 | 20/10/2014 | Dissolved |
| TERRSULA LIMITED | 05454251 | 01/05/2015 | Dissolved |
| WATTRID LIMITED | 02866111 | 20/10/2014 | Dissolved |
| WSP (US) FINANCE LIMITED | 07004340 | 20/10/2014 | Dissolved |
| WSP CENTRAL LIMITED | 02813033 | 20/10/2014 | Dissolved |
| WSP COMMUNICATIONS LIMITED | 02363466 | 20/10/2014 | Dissolved |
| WSP CONSULTING ENGINEERS (SCOTLAND) LIMITED | SC142027 | 20/10/2014 | Dissolved |
| WSP DEVELOPMENT AND TRANSPORTATION LIMITED | 02382309 | 20/10/2014 | Dissolved |
| WSP ENERGY LIMITED | 02862489 | 20/10/2014 | Dissolved |
| WSP FULCRUM LIMITED | 02584791 | 20/10/2014 | Dissolved |
| WSP GROUP INTERNATIONAL LIMITED | 02731628 | 20/10/2014 | Dissolved |
| WSP JAMES LIMITED | 02362376 | 20/10/2014 | Dissolved |
| WSP KNOWLEDGE SOLUTIONS LIMITED | 02890341 | 20/10/2014 | Dissolved |
| WSP LONDON LIMITED | 02813014 | 20/10/2014 | Dissolved |
| WSP MIDLANDS LIMITED | 02753617 | 20/10/2014 | Dissolved |
| WSP REAL WORLD TRAINING LIMITED | 04351532 | 08/09/2015 | Dissolved |
| WSP RISK MANAGEMENT SERVICES LTD | 04334499 | 08/09/2015 | Dissolved |
| WSP SCOTLAND LIMITED | 02813106 | 20/10/2014 | Dissolved |
| WSP SOUTH & WEST LIMITED | 00950554 | 20/10/2014 | Dissolved |
| WSP SPECIAL PROJECTS LIMITED | 02368173 | 20/10/2014 | Dissolved |
| WSP SUSTAINABLE ENERGY LIMITED | 05957477 | 20/10/2014 | Dissolved |
| WSP SYSTEMS LIMITED | 02395826 | 20/10/2014 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AB CONSULTING LIMITED | 01091265 | 20/10/2014 | 02/03/2017 | Dissolved |
| ALERT COMMUNICATIONS (2006) LIMITED | 05861198 | 28/10/2008 | 30/06/2009 | One Red Flag |
| ALERT COMMUNICATIONS (2006) LIMITED | 05861198 | 28/10/2008 | 15/05/2009 | One Red Flag |
| ALERT COMMUNICATIONS (HOLDINGS) LIMITED | 03837152 | 28/10/2008 | 30/06/2009 | Bronze |
| ALERT COMMUNICATIONS (HOLDINGS) LIMITED | 03837152 | 28/10/2008 | 30/06/2009 | Bronze |
| ALERT COMMUNICATIONS GROUP HOLDINGS LIMITED | 05861215 | 28/10/2008 | 30/06/2009 | Amber |
| ALERT COMMUNICATIONS GROUP HOLDINGS LIMITED | 05861215 | 28/10/2008 | 15/05/2009 | Amber |
| ALERT COMMUNICATIONS LIMITED | 03912906 | 28/10/2008 | 30/06/2009 | Silver |
| ALERT COMMUNICATIONS LIMITED | 03912906 | 28/10/2008 | 15/05/2009 | Silver |
| FINANCIAL DECISIONS LIMITED | 02108267 | 20/10/2014 | 02/03/2017 | Dissolved |
| GRAHAM CONSULTING GROUP LIMITED | 02428039 | 20/10/2014 | 02/03/2017 | Dissolved |
| IDEAS PROJECT ENGINEERING LTD. | 03085684 | 08/02/2016 | 02/03/2017 | Dissolved |
| INTEGRATED BUILDING SERVICES DESIGN PARTNERSHIP LIMITED | 02606296 | 20/10/2014 | 02/03/2017 | Dissolved |
| KENNEDY & DONKIN (ASIA) LIMITED | 04091710 | 31/07/2016 | 02/03/2017 | Dissolved |
| KIRKBY AT LIMITED | 06255352 | 08/09/2015 | 02/03/2017 | Dissolved |
| MERZ AND MCLELLAN CONSULTING ENGINEERS LIMITED | 03246982 | 31/07/2016 | 02/03/2017 | Dissolved |
| MOUCHEL LIMITED | 01686040 | 12/10/2016 | 05/03/2017 | Bronze |
| NETWORK RAIL CONSULTING LIMITED | 08071984 | 20/09/2018 | 31/07/2024 | Bronze |
| NETWORK RAIL INTERNATIONAL LIMITED | 02938978 | 02/12/2021 | 31/07/2024 | Bronze |
| PARSONS BRINCKERHOFF HOLDINGS LIMITED | 03640733 | 21/04/2016 | 02/03/2017 | Dissolved |
| PARSONS BRINCKERHOFF LTD | 02554514 | 09/04/2015 | 01/03/2017 | Bronze |
| PB LTD | 00656314 | 09/04/2015 | 01/03/2017 | Not Trading |
| PB POWER LTD | 04353230 | 31/07/2016 | 02/03/2017 | Dissolved |
| SMITH CARTER UK LIMITED | 06219327 | 31/12/2013 | 02/03/2017 | Dissolved |
| WSP BUILDINGS LIMITED | 02859678 | 20/10/2014 | 02/03/2017 | Dissolved |
| WSP CEL LIMITED | 03877626 | 20/10/2014 | 02/03/2017 | Dissolved |
| WSP CIVILS LIMITED | 02430067 | 20/10/2014 | 02/03/2017 | Dissolved |
| WSP ENVIRONMENTAL LIMITED | 01152332 | 15/12/2016 | 02/03/2017 | Dissolved |
| WSP EUROPEAN HOLDINGS LIMITED | 04121721 | 20/10/2014 | 02/03/2017 | Gold |
| WSP GROUP HOLDINGS LIMITED | 07773599 | 20/10/2014 | 02/03/2017 | Silver |
| WSP GROUP LIMITED | 02136404 | 20/10/2014 | 02/03/2017 | Gold |
| WSP HOLDING UK LIMITED | 08100508 | 19/06/2014 | 01/03/2017 | Silver |
| WSP MANAGEMENT CONSULTANTS LIMITED | 05391063 | 20/10/2014 | 13/12/2017 | Strike Off |
| WSP MANAGEMENT SERVICES LIMITED | 02454665 | 17/03/2010 | 01/03/2017 | Silver |
| WSP NORTH LIMITED | 02257665 | 20/10/2014 | 02/03/2017 | Dissolved |
| WSP UK LIMITED | 01383511 | 17/03/2010 | 01/03/2017 | Gold |
| WSP UK WATER SERVICES LIMITED | 02386601 | 01/08/2016 | 02/03/2017 | Dissolved |