| Company | Timeline | Status | |
| AtkinsrÉalis UK Limited Director • Environmental Engineer | 12 Apr 1999←10 Months→22 Feb 2000 | Active | |
| AtkinsrÉalis (WS) Limited Director • Environmental Engineer | 15 Nov 1994←5 Years→22 Feb 2000 | Active | |
| AtkinsrÉalis UK International Limited Director • Enviromental Engineer | 11 Jan 1993←7 Years→22 Feb 2000 | Active | |
WS Atkins Architects Limited Director • Environmental Engineer | 20 Sep 1992←7 Years→22 Feb 2000 | Dissolved | |
| Micklefield School (Reigate) Limited Director • Consultant | 5 Mar 1992←28 Years→1 Dec 2020 | Active | |
| AtkinsrÉalis Consultants Limited Director • Environmental Engineer | 24 Sep 1991←8 Years→22 Feb 2000 | Dissolved | |
