| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | H.S. HIRE AND SALES LIMITED | 🇬🇧United Kingdom | Activa | 10/3/2026 – presente |
| Cargo | H.S. HOLDINGS (SW) LIMITED | 🇬🇧United Kingdom | Disuelta | 13/4/2026 – presente |
| Cargo | LISTER PETTER IPR HOLDINGS LIMITED | 🇬🇧United Kingdom | Activa | 21/4/2026 – 27/1/2022 |
| Cargo | SLEEMAN & HAWKEN POWER SYSTEMS LIMITED | 🇬🇧United Kingdom | Activa | 9/4/2026 – presente |
| Cargo | K MASON HOLDINGS LIMITED | 🇬🇧United Kingdom | Activa | 23/4/2026 – presente |
| Cargo | SLEEMAN & HAWKEN LIMITED | 🇬🇧United Kingdom | Activa | 7/4/2026 – presente |
| Persona con control significativo | MASON DEVELOPMENTS LIMITED | — | Activa | 21/6/2024 – presente |
| Cargo | MASON DEVELOPMENTS LIMITED | — | Activa | 2/2/2026 – presente |
2/5/2023
appointed
27/1/2022
resigned
18/2/2011
appointed