| Company | Timeline | Status | |
| Christie's Assets Holdings Limited Director • Fine Art Dealer | 30 May 1992←2 Months→14 Aug 1992 | Active | |
| Roger Keverne Limited Director • Company Director | 26 Sep 1991←32 Years→9 May 2024 | Dissolved | |
| British Antique Dealers' Association(The) Director • Antique Dealer | 26 Jul 1991←1 Year 1 Month→31 Aug 1992 | Active | |
