| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | PCL CERAMICS EOT LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Officer | PCL CERAMICS EOT LIMITED | 🇬🇧United Kingdom | Active | 15/01/2026 – present |
| Person with significant control | PIL MEMBRANES EOT LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Officer | PIL MEMBRANES EOT LIMITED | 🇬🇧United Kingdom | Active | 05/04/2026 – present |
| Person with significant control | NANOFLAM HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – 23/11/2017 |
| Officer | NANOFLAM HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 18/04/2026 – present |
| Officer | KL TECHNOLOGIES HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 18/04/2026 – present |
| Person with significant control | KL TECHNOLOGIES HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 24/06/2024 – 23/11/2017 |
| Officer | KLT FILTRATION HOLDINGS LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 01/04/2026 – present |
| Person with significant control | KLT FILTRATION HOLDINGS LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 19/06/2024 – 23/11/2017 |
| Person with significant control | PCL CERAMICS HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 26/06/2024 – 23/11/2017 |
| Officer | PCL CERAMICS HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 03/06/2026 – present |
| Person with significant control | KLT RENEWABLES HOLDINGS LIMITED | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – 23/11/2017 |
| Person with significant control | KLT RENEWABLES LIMITED | 🇬🇧United Kingdom | Active | 23/06/2024 – 23/11/2017 |
| Officer | KLT RENEWABLES LIMITED | 🇬🇧United Kingdom | Active | 18/04/2026 – 19/03/2019 |
| Officer | KLT RENEWABLES HOLDINGS LIMITED | 🇬🇧United Kingdom | Dissolved | 18/04/2026 – 19/03/2019 |
| Person with significant control | — | — | Active | 26/06/2024 – present |
| Person with significant control | MARK W HAMILTON LTD | 🇬🇧United Kingdom | Proposal to strike off | 19/06/2024 – present |
| Officer | KLT FILTRATION LIMITED | 🇬🇧United Kingdom | Active | 19/01/2026 – 07/02/2025 |
| Officer | NANOFLAM LIMITED | 🇬🇧United Kingdom | Active | 19/01/2026 – present |
| Officer | K L TECHNOLOGIES LIMITED | 🇬🇧United Kingdom | Active | 04/06/2026 – present |
| Officer | PIL MEMBRANES LIMITED | 🇬🇧United Kingdom | Active | 19/01/2026 – 30/09/2020 |
| Officer | PCL CERAMICS LIMITED | 🇬🇧United Kingdom | Active | 19/01/2026 – 24/02/2022 |
07/02/2025
resigned
24/02/2022
resigned
06/04/2016
appointed