| Company | Timeline | Status | |
| British Antique Dealers' Association(The) Director • Art Dealer  | 2 Jun 2020←6 Months→1 Dec 2020  | Active  | |
| The Open Art Fair Limited Director • Art Dealer  | 7 Jul 2009←4 Years→12 May 2014  | Active  | |
| British Antique Dealers' Association(The) Director • Art Dealer  | 18 Jul 2006←11 Years→15 Nov 2017  | Active  | |
| Northern Antique Dealers Fair Limited Director • Fine Art Dealer  | 1 Nov 1999←8 Years→9 Nov 2007  | Active  | |
Harrogate Antique & Fine Art Fair Limited(The) Director • Company Director  | 23 Oct 1992←14 Years→19 Oct 2007  | Dissolved  | |
| Walker Galleries Limited Secretary • Director  | 17 Sep 1991←34 Years→Current  | Active  | |
| Walker Galleries Limited Director • Unreported  | 1 Jan 1970←55 Years→Current  | Active  | |
