| Company | Timeline | Status | |
| Gladwell & Co Director • Unreported | 3 Mar 2005←20 Years→Current | Active | |
| W.H. Patterson Limited Director • Unreported | 24 May 2004←21 Years→Current | Active | |
Gladwell Fine Art Limited Director • Fine Art Dealer | 24 Sep 1999←19 Years→23 Apr 2019 | Dissolved | |
