| Company | Timeline | Status | |
| Surrey Historic Buildings Trust Limited Director • Antiquarian Horologist | 4 Jul 2003←1 Year→20 Jul 2004 | Active | |
| The British Watch & Clockmakers' Guild Director • Horologist | 31 Dec 2002←15 Years→10 Dec 2018 | Active | |
| Antiquarian Horological Society(The) Director • Horologist | 20 Jul 2000←3 Years→22 Jan 2004 | Active | |
