| Company | Timeline | Status | |
| William Walsh Art Consultancy Limited Director • Director | 5 Jul 2024←1 Year 4 Months→Current | Active | |
| Aitchison Advisory Limited Director • Director | 3 Jul 2024←1 Year 4 Months→Current | Active | |
| Aitchison Studio Ltd Director • Student | 27 Nov 2018←4 Years→30 May 2023 | Dissolved | |
