| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | MARK P CALVERT LTD | 🇬🇧Regno Unito | Active | 18/12/2023 – present |
| Officer | MARK P CALVERT LTD | 🇬🇧Regno Unito | Active | 15/12/2025 – present |
| Officer | MACHINE LONDON LTD | 🇬🇧Regno Unito | Dissolved | 05/04/2026 – present |
| Person with significant control | CALVERT & GREEN LTD | 🇬🇧Regno Unito | Dissolved | 21/06/2024 – 01/03/2023 |
| Officer | CALVERT & GREEN LTD | 🇬🇧Regno Unito | Dissolved | 11/04/2026 – present |
| Person with significant control | MOSAIC LED LTD | 🇬🇧Regno Unito | Dissolved | 25/06/2024 – 01/01/2020 |
| Officer | MOSAIC LED LTD | 🇬🇧Regno Unito | Dissolved | 13/04/2026 – present |
| Officer | HIVE MEDIA CONTROL LTD | 🇬🇧Regno Unito | Active | 18/12/2025 – present |
| Person with significant control | REALTIME ENVIRONMENT SYSTEMS LTD | 🇬🇧Regno Unito | Active | 18/06/2024 – 25/04/2023 |
| Person with significant control | IMMERSIVE LONDON LIMITED | — | Dissolved | 18/06/2024 – present |
| Person with significant control | PASA CONSTRUCTION LIMITED | — | Dissolved | 18/06/2024 – present |
| Officer | REALTIME ENVIRONMENT SYSTEMS LTD | 🇬🇧Regno Unito | Active | 15/12/2025 – present |
| Officer | GAINSBOROUGH ASSOCIATES LIMITED | — | Dissolved | 10/05/2026 – 06/06/2014 |
| Officer | IMMERSIVE LONDON LIMITED | — | Dissolved | 14/05/2026 – present |
| Officer | IMMERSIVE LIMITED | — | Liquidation | 30/12/2025 – 16/07/2014 |
| Officer | INSIDE-US-ALL LIMITED | — | Dissolved | 08/06/2026 – present |
| Officer | A.I SYSTEMS LIMITED | — | Dissolved | 11/06/2026 – 07/09/2011 |
10/05/2026
United Kingdom → England
21/04/2026
United Kingdom → England
23/10/2006
appointed