| Company | Timeline | Status | |
Hermoine Ltd Director • Director | 17 Mar 2016←3 Years→10 Dec 2019 | Dissolved | |
| Antiquarian Booksellers Association (International) Director • Antiquarian Bookseller | 1 Jan 2004←1 Year 3 Months→13 Apr 2005 | Active | |
| Adrian Harrington Limited Director • Bookseller | 3 Sep 1997←28 Years→Current | Active | |
| Adrian Harrington Limited Secretary • Bookseller | 3 Sep 1997←28 Years→Current | Active | |
