| Company | Timeline | Status | |
Aquimeda Ltd Director • Author And Illustrator | 1 Dec 2014←5 Years→13 Oct 2020 | Dissolved | |
| Heather S. Buchanan Limited Director • Director | 18 Dec 1991←28 Years→20 Oct 2020 | Active | |
| Heather S. Buchanan Limited Director • Unreported | 1 Jan 1970←50 Years→20 Oct 2020 | Active | |
