| Company | Timeline | Status | |
| Tuv Sud WW Holdings Limited Director • Director | 6 Oct 2004←13 Years→13 Feb 2018 | Dissolved | |
| Wallace Whittle Limited Director • Director | 1 Nov 1996←21 Years→13 Feb 2018 | Active | |
| WSP Environment & Infrastructure Solutions UK Limited Director • Consulting Engineer | 1 Apr 1995←1 Year 7 Months→1 Nov 1996 | Active | |
| Wallace Whittle Limited Director • Consulting Engineer (mechanica | 31 May 1990←2 Years 7 Months→4 Jan 1993 | Active | |
