| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | JAVA (ML94) LIMITED | 🇬🇧Regno Unito | Active | 28/01/2026 – present |
| Officer | JWJ RESIDENTIAL LIMITED | 🇬🇧Regno Unito | Active | 09/02/2026 – present |
| Officer | HERNING WIND LIMITED | 🇬🇧Regno Unito | Active | 28/04/2026 – present |
| Officer | LAKOTA TATE LIMITED | 🇬🇧Regno Unito | Dissolved | 07/01/2026 – present |
| Officer | ESMARTMETRICS LIMITED | 🇬🇧Regno Unito | Dissolved | 07/01/2026 – present |
| Officer | SOS DRAINS LIMITED | 🇬🇧Regno Unito | Active | 02/03/2026 – present |
| Officer | CIRRUS WIND SERVICES LIMITED | 🇬🇧Regno Unito | Active | 15/05/2026 – present |
| Officer | PLANET TRANSPORT (TECHNOLOGIES) LIMITED | 🇬🇧Regno Unito | Dissolved | 15/06/2026 – present |
| Officer | SOLTYRE LIMITED | 🇬🇧Regno Unito | Active | 08/06/2026 – present |
| Officer | J. W. JOHNSTON LIMITED | 🇬🇧Regno Unito | Active | 25/03/2026 – present |
| Person with significant control | J GAS LIMITED | 🇬🇧Regno Unito | Active | 19/06/2024 – 01/01/2024 |
| Person with significant control | JOHNSTON FUELS LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | JOHNSTON OILS LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Officer | ALLISON & HUNTER OIL LIMITED | 🇬🇧Regno Unito | Active | 20/04/2026 – present |
| Officer | CGF2020 LIMITED | 🇬🇧Regno Unito | Dissolved | 31/05/2026 – present |
| Officer | JOHNSTON FUELS LIMITED | 🇬🇧Regno Unito | Active | 26/01/2026 – present |
27/01/2026
appointed
07/12/2025
United Kingdom → Scotland
24/09/2009
appointed