| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | ENVIRONMENTAL SCOT LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 26/06/2024 – present |
| Person with significant control | — | — | Active | 25/06/2024 – present |
| Person with significant control | BELBOY LIMITED | 🇬🇧United Kingdom | Active | 26/06/2024 – present |
| Person with significant control | FUSION OPTIMA LIMITED | 🇬🇧United Kingdom | Active | 20/06/2024 – present |
| Person with significant control | BUCHANAN GROUP LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 14/06/2024 – present |
| Person with significant control | W J WALKER (SURVEYORS) LIMITED | 🇬🇧United Kingdom | Dissolved | 26/06/2024 – present |
| Person with significant control | J & S WALKER LTD | 🇬🇧United Kingdom | Dissolved | 23/06/2024 – present |
| Person with significant control | STONEGRAZE LIMITED | 🇬🇧United Kingdom | Active | 26/06/2024 – present |
| Person with significant control | LEBATON LTD | 🇬🇧United Kingdom | Active | 26/06/2024 – present |
| Officer | W J WALKER (SURVEYORS) LIMITED | 🇬🇧United Kingdom | Dissolved | 17/12/2025 – present |
14/05/2026
Scotland → England
25/06/2024
England → Scotland
16/04/2003
appointed