| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | MARINE FISHERIES LTD | 🇬🇧Regno Unito | Dissolved | 24/03/2026 – present |
| Officer | JOHN SIMPSON GROUP LIMITED | 🇬🇧Regno Unito | Active | 16/12/2025 – present |
| Officer | JOHN SIMPSON CIVILS LIMITED | 🇬🇧Regno Unito | Active | 28/01/2026 – present |
| Officer | DAVID SIMPSON LTD | 🇬🇧Regno Unito | Active | 29/05/2026 – present |
29/05/2026
England → Scotland
04/04/2026
Scotland → England
04/09/2019
appointed