| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | GEOPOLYMER TECHNOLOGIES GROUP LTD | 🇬🇧Regno Unito | Dissolved | 19/06/2024 – present |
| Person with significant control | GEOPOLYMER CEMENTS LTD | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | MCCALLUM PR LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – 01/10/2018 |
21/09/2025
United Kingdom → England
24/02/2025
England → United Kingdom
25/01/2018
appointed