| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | NATIONAL ENERGY SYSTEM OPERATOR LIMITED | 🇬🇧United Kingdom | Activa | 19/4/2026 – 1/4/2019 |
| Cargo | NATIONAL GRID VENTURES LIMITED | — | Activa | 19/5/2026 – 13/11/2019 |
| Cargo | CADENT GAS LIMITED | 🇬🇧United Kingdom | Activa | 28/4/2026 – 8/9/2016 |
| Cargo | CADENT SERVICES LIMITED | 🇬🇧United Kingdom | Activa | 28/4/2026 – 8/9/2016 |
| Cargo | NATIONAL GRID PARTNERS LIMITED | — | Activa | 1/5/2026 – 2/7/2018 |
| Cargo | NATIONAL GRID VIKING LINK LIMITED | — | Activa | 10/5/2026 – 24/6/2014 |
| Cargo | NATIONAL GRID WILLIAM LIMITED | — | Activa | 26/5/2026 – 4/11/2014 |
| Cargo | NG NOMINEES LIMITED | 🇬🇧United Kingdom | Liquidación | 1/1/2026 – 13/11/2019 |
| Cargo | NATIONAL GRID BLUE POWER FINANCE LIMITED | — | Disuelta | 7/6/2026 – presente |
| Cargo | NGC EMPLOYEE SHARES TRUSTEE LIMITED | 🇬🇧United Kingdom | Liquidación | 17/12/2025 – 13/11/2019 |
| Cargo | PORTERS END CONSULTANCY LTD | — | Disuelta | 17/5/2026 – presente |
13/11/2019
resigned
1/4/2019
resigned
7/11/2012
appointed