| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | ARENRO LTD | 🇬🇧United Kingdom | Disuelta | 7/6/2026 – presente |
| Cargo | SPARK ENERGY SYSTEMS LTD | 🇬🇧United Kingdom | Disuelta | 3/1/2026 – 18/10/2001 |
| Cargo | SPARK ENERGY SYSTEMS LTD | 🇬🇧United Kingdom | Disuelta | 3/1/2026 – 18/10/2001 |
8/6/2007
appointed
18/10/2001
resigned
8/6/1991
appointed