| Company | Timeline | Status | |
| Flow Control (Water Conservation) Limited Director • Company Director | 29 Jun 2004←7 Years→30 Sep 2011 | Dissolved | |
| Utility Technical Services Limited Director • Architect | 6 Apr 1998←13 Years→30 Sep 2011 | Dissolved | |
| RPS Us Holdings Limited Director • Company Director | 31 Dec 1992←18 Years→30 Sep 2011 | Dissolved | |
| Tetra Tech Consulting Limited Director • Company Director | 31 Dec 1992←18 Years→30 Sep 2011 | Active | |
| R P S Group Limited Director • Company Director | 25 Apr 1992←19 Years→30 Sep 2011 | Active | |
