| Company | Timeline | Status | |
| Antiquarian Booksellers Association (International) Director • Bookseller | 21 Mar 2019←2 Years 12 Months→16 Mar 2022 | Active | |
| Steeple Green Management Limited Secretary • Bookseller | 18 May 2007←7 Years→31 Dec 2014 | Active | |
| Allsworth Rare Books Limited Director • Unreported | 10 Apr 2002←23 Years→Current | Active | |
| Steeple Green Management Limited Director • Antiquarian Bookseller | 15 Aug 2000←20 Years→4 Oct 2020 | Active | |
| Waterlow Residents (1-180 Wilmot St) Ltd Director • Antiquarian Book Dealer | 13 Sep 1995←3 Years→30 Apr 1999 | Active | |
