| Company | Timeline | Status | |
| Zerorisc INC Director • None | 8 Nov 2024←1 Year→Current | Active | |
| Raspberry Pi Holdings Plc Director • Company Director | 2 Jun 2024←1 Year 6 Months→Current | Active | |
| Wild Hydrogen Ltd Director • Director | 12 May 2023←2 Years 7 Months→Current | Active | |
| The Suffolk Sur Mer Limited Director • Director | 13 Sep 2021←4 Years→Current | Active | |
| Raspberry Pi Ltd Director • Company Director | 6 Sep 2016←7 Years→16 Jul 2024 | Active | |
| Lo-Q (Trustees) Limited Director • Company Director | 5 May 2016←4 Years→31 Dec 2020 | Active | |
| Venturebeam Ltd Director • Director | 1 Jun 2015←1 Year 8 Months→26 Jan 2017 | Active | |
| Cake Technologies Ltd Director • Company Director | 30 Apr 2012←3 Months→10 Aug 2012 | Dissolved | |
| Frontier Developments Plc Director • Non-executive Chairman | 15 Feb 2012←10 Years→1 Dec 2022 | Active | |
| Supply@Me Capital Plc Director • Director | 3 Oct 2011←2 Years 7 Months→13 May 2014 | Active | |
