| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | QUANTUM ECOTECH LIMITED | 🇬🇧Regno Unito | Dissolved | 22/06/2024 – present |
| Person with significant control | ENERGY EFFECTIVE (HOLDINGS) LTD | 🇬🇧Regno Unito | Active | 26/06/2024 – present |
| Officer | ENERGY EFFECTIVE (HOLDINGS) LTD | 🇬🇧Regno Unito | Active | 23/01/2026 – present |
| Officer | QUANTUM ECOTECH LIMITED | 🇬🇧Regno Unito | Dissolved | 08/04/2026 – 17/09/2022 |
| Officer | HEATXTRACT LTD | 🇬🇧Regno Unito | Active | 15/04/2026 – present |
| Person with significant control | HEATXTRACT LTD | 🇬🇧Regno Unito | Active | 25/06/2024 – present |
| Person with significant control | ENERGY EFFECTIVE LTD | 🇬🇧Regno Unito | Active | 26/06/2024 – present |
| Officer | SWCONSULT LIMITED | — | Dissolved | 20/05/2026 – present |
| Officer | CONSULTSW LTD | 🇬🇧Regno Unito | Dissolved | 29/05/2026 – present |
| Officer | SIGMA INTERNET LTD | — | Dissolved | 12/06/2026 – 30/06/2010 |
05/08/2024
appointed
17/09/2022
resigned
10/07/2006
appointed