| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | GXP MATCH LTD | 🇬🇧United Kingdom | Active | 16/03/2026 – present |
| Person with significant control | GXP MATCH LTD | 🇬🇧United Kingdom | Active | 01/10/2025 – present |
| Person with significant control | WHISKY DIRECT LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | D&G PLUMBING & HEATING SOLUTIONS LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 18/06/2024 – present |
| Officer | PARATUS PARTNERS LTD | 🇬🇧United Kingdom | Active | 19/04/2026 – 03/11/2025 |
| Person with significant control | DEREK JOHNSTON ELECTRICAL SERVICES LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | MSW LIMITED | — | Active | 19/06/2024 – 13/02/2018 |
| Officer | JOHNSTON SOLUTIONS LIMITED | 🇬🇧United Kingdom | Dissolved | 27/05/2026 – present |
07/12/2025
Northern Ireland → United Kingdom
03/11/2025
resigned
06/04/2010
appointed