| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| WHITE YOUNG GREEN CONSULTING LIMITED | NF003673 | 03/12/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BAKER HICKS EUROPE HOLDINGS LIMITED | 06325415 | 12/02/2010 | 24/04/2012 | Bronze |
| BAKER HICKS LIMITED | 06256571 | 12/02/2010 | 24/04/2012 | Gold |
| MORGAN SINDALL ENGINEERING SOLUTIONS LIMITED | 04969901 | 20/05/2010 | 24/04/2012 | Gold |
| MORGAN SINDALL PROFESSIONAL SERVICES (FRANCE) LTD. | 06325427 | 12/02/2010 | 24/04/2012 | Dissolved |
| TETRA TECH GROUP LIMITED | 06595608 | 01/07/2008 | 01/01/2009 | One Red Flag |
| TETRA TECH LIMITED | 01959704 | 01/01/2009 | 07/12/2009 | Silver |