| Company | Timeline | Status | |
| Turner Donovan Military Books Limited Director • Unreported | 30 Jan 2023←2 Years 11 Months→Current | Active | |
| 22 Florence Road Management Limited Director • Unreported | 5 Nov 2010←15 Years→Current | Active | |
Tom Donovan Editions Limited Director • Book Dealer | 28 Jun 2006←11 Years→16 Jan 2018 | Dissolved | |
| Datacastle Limited Secretary • Unreported | 21 Feb 1992←33 Years→27 May 2025 | Dissolved | |
