| Company | Timeline | Status | |
| William Leech Foundation Limited(The) Director • Company Director | 27 Feb 2024←1 Year 10 Months→Current | Active | |
| William Leech (Investments) Limited Director • Company Director | 27 Feb 2024←1 Year 10 Months→Current | Active | |
| The Scots Guards Charity Director • Investment Management | 2 Feb 2017←8 Years→Current | Active | |
| Protea Asset Management Ltd Director • Investment Manager | 8 Jul 2013←1 Day→8 Jul 2013 | Active | |
Laserbrooke LLP Non-designated LLP Member • Unreported | 24 Feb 2010←5 Years→17 Nov 2015 | Dissolved | |
| Tamar Films LLP Non-designated LLP Member • Unreported | 8 Sep 2006←18 Years→5 Apr 2025 | Active | |
| Prefect Software LLP Non-designated LLP Member • Unreported | 5 Apr 2005←10 Years→14 Mar 2016 | Active | |
