| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Persona con control significativo | MARINE FISHERIES LTD | 🇬🇧United Kingdom | Disuelta | 14/12/2023 – presente |
| Persona con control significativo | JOHN SIMPSON GROUP LIMITED | 🇬🇧United Kingdom | Activa | 22/6/2024 – presente |
| Persona con control significativo | JOHN SIMPSON CIVILS LIMITED | 🇬🇧United Kingdom | Activa | 26/6/2024 – 29/8/2025 |
| Persona con control significativo | MF TOOLS LIMITED | 🇬🇧United Kingdom | Activa | 26/6/2024 – presente |
| Persona con control significativo | DAVID SIMPSON LTD | 🇬🇧United Kingdom | Activa | 26/6/2024 – presente |
4/4/2026
Scotland → England
24/3/2026
England → Scotland
4/9/2019
appointed