| Company | Timeline | Status | |
| Subterranea Britannica Director • Retired Civil Servant | 28 Sep 2019←6 Years→Current | Active | |
| High Speed Three (HS3) Limited Director • Civil Servant | 14 Jan 2009←2 Years→28 Jan 2011 | Active | |
| High Speed Six (HS6) Limited Director • Civil Servant | 14 Jan 2009←3 Years→4 Dec 2012 | Active | |
| High Speed Four (HS4) Limited Director • Civil Servant | 14 Jan 2009←2 Years→31 Jan 2011 | Active | |
| High Speed Two (HS2) Limited Director • Civil Servant | 14 Jan 2009←1 Year 11 Months→31 Dec 2010 | Active | |
| High Speed Five (HS5) Limited Director • Civil Servant | 14 Jan 2009←2 Years→31 Jan 2011 | Active | |
| Kew Bridge Engines Trust And Water Supply Museum Limited(The) Director • Civil Servant | 25 May 2006←11 Years→18 Jan 2018 | Active | |
