| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | LABORATORY IT CONSULTING LIMITED | 🇬🇧United Kingdom | Dissolved | 25/06/2024 – present |
| Person with significant control | PORT INVEST LIMITED | 🇬🇧United Kingdom | Active | 24/06/2024 – 19/09/2018 |
| Person with significant control | DEJ CONSULTING LTD | 🇬🇧United Kingdom | Active | 26/06/2024 – present |
| Person with significant control | D JOHNSON TECHNICAL SERVICES LIMITED | 🇬🇧United Kingdom | Active | 25/06/2024 – present |
| Person with significant control | DJM FABRICATION LIMITED | — | Dissolved | 23/06/2024 – present |
| Person with significant control | DAVID JOHNSON OVERHEAD LINES LTD | — | Active | 24/06/2024 – present |
06/06/2026
England → United Kingdom
31/01/2026
United Kingdom → England
06/04/2016
appointed