| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | SHALE BORING & ENGINEERING SERVICES LIMITED | 🇬🇧United Kingdom | Disuelta | 24/4/2026 – presente |
| Cargo | SHALE BORING & ENGINEERING SERVICES LIMITED | 🇬🇧United Kingdom | Disuelta | 24/4/2026 – presente |
| Cargo | SHALE ENGINEERING LIMITED | 🇬🇧United Kingdom | Activa | 7/4/2026 – presente |
| Cargo | SHALE ENGINEERING HOLDINGS LIMITED | — | Activa | 31/5/2026 – presente |
29/9/2016
appointed
19/11/2009
appointed