| Company | Timeline | Status | |
| Building Biology Association Director • Architect | 14 Jul 2014←11 Years→Current | Active | |
| Building Biology Consultancy Limited Director • Architect | 14 Jul 2014←11 Years→Current | Active | |
| Gale & Snowden Architects Ltd Director • Architect | 22 Nov 2005←19 Years→Current | Active | |
| Gale & Snowden Architects Ltd Director • Architect | 22 Nov 2005←19 Years→31 May 2025 | Active | |
| The Ecological Building Company Limited Director • Architect | 8 May 1996←29 Years→15 Jul 2025 | Dissolved | |
| The Ecological Building Company Limited Secretary • Architectural Designer | 8 May 1996←29 Years→15 Jul 2025 | Dissolved | |
