| Company | Timeline | Status | |
| Spencer Quantum Limited Director • Chartered Engineer | 7 Mar 2023←2 Years 7 Months→Current | Active | |
| Spencer Eca Group Limited Director • Chartered Engineer | 1 Feb 2023←1 Year→1 Mar 2024 | Dissolved | |
| Quantum Geotechnic Limited Director • Chartered Engineer | 7 Jul 2021←4 Years→Current | Active | |
| Quantum Geotechnical Limited Director • Company Director | 1 Sep 2017←6 Years→22 Dec 2023 | Dissolved | |
