| Company | Timeline | Status | |
| Geotechnical & Structural Services (Holdings) Limited Director • None | 12 Aug 2015←5 Years→21 May 2021 | Dissolved | |
| Geotechnical And Structural Services Limited Director • Chartered Structural Engineer | 28 Feb 2013←8 Years→21 May 2021 | Dissolved | |
| Ian Farmer Associates (1998) Limited Director • Engineer | 22 May 2008←17 Years→Current | Active | |
