| Company | Timeline | Status | |
| The Lighthouse (Torquay) Management Company Limited Director • Antiquarian Bookseller | 7 Dec 2010←7 Years→9 Feb 2018 | Active | |
| The Lighthouse (Torquay) Limited Director • Antiquarian Bookseller | 25 Oct 2010←8 Years→4 Nov 2018 | Dissolved | |
| The Holst Birthplace Trust Director • Manuscript Dealer | 20 May 2002←7 Years→22 Jun 2009 | Active | |
John Wilson Manuscripts Ltd Director • Administrator | 6 Dec 1996←21 Years→4 Feb 2018 | Dissolved | |
John Wilson Manuscripts Ltd Secretary • Administrator | 6 Dec 1996←21 Years→4 Feb 2018 | Dissolved | |
