| Company | Timeline | Status | |
| Biddulph Mansions (East) Limited Director • Museum Curator | 26 Nov 1992←7 Years→21 Jul 2000 | Active | |
| Burlington Magazine Publications Limited(The) Director • Museum Curator | 6 Dec 1991←10 Years→31 Jul 2002 | Active | |
| Burlington Magazine Publications Limited(The) Director • Unreported | 1 Jan 1970←32 Years→31 Jul 2002 | Active | |
