| Company | Timeline | Status | |
| Ruffer LLP Non-designated LLP Member • Unreported | 6 Apr 2004←21 Years→Current | Active | |
| Halkin Services Limited Director • Economist | 10 Oct 2002←23 Years→Current | Active | |
| Economic Perspectives Limited Director • Economist | 12 Feb 1996←29 Years→Current | Active | |
