| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | JOHN BLAKE MEDIA LTD | 🇬🇧United Kingdom | Activa | 9/4/2026 – presente |
| Cargo | AD LIB PUBLISHERS LIMITED | 🇬🇧United Kingdom | Activa | 9/4/2026 – 25/11/2019 |
| Cargo | SOHO FRIDAY MEDIA LTD | — | Disuelta | 14/4/2026 – 25/11/2019 |
| Cargo | JOHN BLAKE LITERARY CONSULTANCY LTD | 🇬🇧United Kingdom | Disuelta | 14/4/2026 – presente |
| Cargo | GABLECOT LTD | 🇬🇧United Kingdom | Activa | 20/4/2026 – presente |
4/12/2019
appointed
25/11/2019
resigned
12/7/2017
appointed