| Company | Timeline | Status | |
| Studio Voltaire Director • Director | 25 Jul 2024←1 Year 3 Months→Current | Active | |
| Webster Hamilton Ltd Director • Company Director | 16 May 2022←3 Years→Current | Active | |
| International Galleries Alliance Director • Founding Director The Modern Institute Glasgow | 26 Jan 2021←2 Years 3 Months→11 May 2023 | Dissolved | |
| April Crichton Ltd Director • Gallerist | 19 Apr 2011←14 Years→Current | Active | |
| Grizedale ARTS Director • Company Director | 29 Jul 2005←4 Years→23 Oct 2009 | Active | |
| Toby Webster Ltd Director • Gallerist | 18 Apr 2005←20 Years→Current | Active | |
| The Common Guild Limited Secretary • Artist | 10 Mar 1999←7 Years→30 Nov 2006 | Active | |
| The Common Guild Limited Director • Artist | 10 Apr 1997←13 Years→15 Dec 2010 | Active | |
