| Company | Timeline | Status | |
| Dunwich Greyfriars Trust Director • Consulting Engineer | 30 May 2014←1 Day→30 May 2014 | Active | |
| Dunwich Greyfriars Trust Director • Engineering Consultant | 26 Jul 2013←3 Years→19 May 2017 | Active | |
| Whitby Wood Limited Director • Unreported | 26 Sep 2011←14 Years→Current | Active | |
| Davies Maguire Limited Director • None | 9 Sep 2010←4 Years→31 Jan 2015 | Active | |
| The Whitbybird Foundation Director • Engineer | 17 Mar 2009←16 Years→Current | Active | |
| The Newcomen Society For The Study Of The History Of Engineering And Technology Director • Structural Engineer | 1 Oct 2008←4 Years→30 Sep 2012 | Active | |
| Construction And Development Partnership Ltd Director • Chairman Of Ramboll Whitbybird | 23 Apr 2008←17 Years→Current | Active | |
| Ramboll Middle East Limited Director • Engineer | 17 Jul 2006←3 Years→4 Jan 2010 | Active | |
| Engineering Timelines Director • Engineer | 14 Nov 2003←22 Years→2 Dec 2025 | Dissolved | |
| Ownpower UK Limited Director • Engineer | 2 Oct 2003←20 Days→22 Oct 2003 | Active | |
