| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | JOHN BLAKE MEDIA LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | AD LIB PUBLISHERS LIMITED | 🇬🇧United Kingdom | Active | 26/06/2024 – 25/11/2019 |
| Person with significant control | SOHO FRIDAY MEDIA LTD | — | Dissolved | 26/06/2024 – present |
| Person with significant control | JOHN BLAKE LITERARY CONSULTANCY LTD | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – present |
| Person with significant control | GABLECOT LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
04/12/2019
appointed
25/11/2019
resigned
12/07/2017
appointed