| Company | Timeline | Status | |
| The OLD Brewery Court (Somerby) Management Company Limited Director • Design Consultant | 3 Jun 2014←4 Years→26 Apr 2019 | Active | |
| The International Glassfibre Reinforced Concrete Association Director • Design Consultant | 27 May 2011←5 Years→1 Dec 2016 | Active | |
| Smart Crosby International Ltd Director • Unreported | 22 Oct 1993←23 Years→31 Oct 2016 | Active | |
Smithers Purslow & Company Limited Director • Structural Engineer | 6 Oct 1991←1 Year 8 Months→17 Jun 1993 | Dissolved | |
| Gateley Smithers Purslow Limited Director • Structural Engineer | 6 Oct 1991←1 Year 8 Months→17 Jun 1993 | Active | |
