| Company | Timeline | Status | |
| Swarbrick Geopressure Consultancy Limited Director • Consultant | 29 Oct 2013←9 Years→24 Jan 2023 | Dissolved | |
| Ikon Science Limited Director • Global Director Geopressure | 17 Nov 2010←2 Years 11 Months→17 Oct 2013 | Active | |
| Geopressure Technology Limited Director • Geologist | 3 Oct 1997←16 Years→17 Oct 2013 | Dissolved | |
