| Company | Timeline | Status | |
J R (CCPH) Limited Director • Engineering Consultant | 3 Oct 2012←1 Year 7 Months→20 May 2014 | Dissolved | |
| Brighton College Director • Consulting Engineer | 18 Mar 1995←5 Years→1 Jun 2000 | Active | |
| Wilde Carter Clack Ltd Director • Engineering Consultant | 12 May 1991←21 Years→28 Feb 2013 | Active | |
