| Company | Timeline | Status | |
| Emulous Limited Director • Director | 23 Nov 2001←2 Years 1 Month→20 Jan 2004 | Dissolved | |
| Mersey Waste Holdings Limited Director • Company Director | 9 Jun 1993←6 Years→3 Apr 2000 | Active | |
| R P S Group Limited Director • Environmental Consultant | 25 Apr 1993←8 Years→25 Feb 2002 | Active | |
| RPS Us Holdings Limited Director • Environmental Consultant | 31 Dec 1992←9 Years→25 Feb 2002 | Dissolved | |
| RPS Consultants Limited Director • Environmental Consultant | 31 Dec 1992←9 Years→25 Feb 2002 | Active | |
| Tetra Tech Consulting Limited Director • Environmental Consultant | 31 Dec 1992←9 Years→25 Feb 2002 | Active | |
| RPS Consultants Limited Director • Unreported | 1 Jan 1970←32 Years→25 Feb 2002 | Active | |
