| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | FOLLA CAMPBELL INVESTMENTS LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | RTT DEVELOPMENTS LTD | — | Proposal to strike off | 19/06/2024 – present |
| Person with significant control | — | — | Active | 18/06/2024 – present |
| Person with significant control | ETS TECHNICAL SERVICES LTD | 🇬🇧United Kingdom | Liquidation | 19/06/2024 – present |
| Person with significant control | CASTLEQUARTER COACHING LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | CAMPBELL OF DOUNE LTD | 🇬🇧United Kingdom | Active | 26/06/2024 – present |
| Person with significant control | HUGH CAMPBELL & SONS (DOUNE) LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | HCKC LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – 24/10/2018 |
| Officer | HIGHLAND POWER LIMITED | — | Dissolved | 26/05/2026 – 07/04/2011 |
| Officer | HUGH CAMPBELL & SONS (DOUNE) LIMITED | 🇬🇧United Kingdom | Active | 01/02/2026 – present |
| Officer | CAMPBELL OF DOUNE LTD | 🇬🇧United Kingdom | Active | 27/01/2026 – present |
26/05/2026
United Kingdom → Uk
08/12/2025
United Kingdom → Northern Ireland
22/12/2004
appointed