| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | BIOSOURCE WALES LIMITED | — | Dissolved | 02/06/2026 – 31/05/2016 |
| Officer | FUEL CELL SERVICE SOLUTIONS LIMITED | — | Dissolved | 03/06/2026 – present |
| Officer | NUFORMIX TECHNOLOGIES LIMITED | 🇬🇧Regno Unito | Active | 06/06/2026 – 15/09/2011 |
| Officer | NANOCENTRAL LIMITED | — | Dissolved | 04/06/2026 – present |
| Officer | PRIMARY DISPERSIONS LIMITED | — | Dissolved | 04/06/2026 – 31/05/2016 |
| Officer | POLYPHOTONIX LIMITED | 🇬🇧Regno Unito | Active | 05/05/2026 – 31/05/2016 |
| Officer | ASSUREDNANO LIMITED | — | Dissolved | 06/06/2026 – 31/05/2016 |
| Officer | NANOTECHNOLOGY INDUSTRIES ASSOCIATION | 🇬🇧Regno Unito | Active | 04/06/2026 – 23/11/2009 |
31/05/2016
resigned
15/09/2011
resigned
03/03/2008
appointed