| Company | Timeline | Status | |
| Campbell Art Advisory Limited Director • Art Advisor | 19 Nov 2018←2 Years 11 Months→4 Nov 2021 | Active | |
| Rafael Valls Limited Director • Art Dealer | 1 Oct 2005←17 Years→21 Dec 2022 | Active | |
| Toby Campbell Fine Art Limited Director • Art Dealer | 18 Dec 2003←21 Years→Current | Active | |
