| Company | Timeline | Status | |
| Rook Lane ARTS Trust Ltd Director • Consulting Engineer | 1 Dec 2008←4 Years→7 Apr 2013 | Active | |
| Horizons Europe Limited Secretary • Consulting Engineer | 1 Oct 2001←4 Years→24 Jan 2006 | Active | |
| Horizons Europe Limited Director • Consulting Engineer | 2 May 2000←21 Years→18 Jun 2021 | Active | |
| Mann Williams Limited Director • Civil & Structural Engineer | 26 Aug 1998←14 Years→1 Sep 2012 | Active | |
| Mann Williams Limited Secretary • Civil & Structural Engineer | 26 Aug 1998←14 Years→1 Sep 2012 | Active | |
| Flytrek Limited Director • Consulting Engineer | 1 Jan 1970←36 Years→7 Mar 2006 | Active | |
