| Company | Timeline | Status | |
| Jonjo O'Neill Racing Limited Director • Racehorse Trainer | 4 Jun 2024←1 Year 7 Months→Current | Active | |
| Trafalgar House Properties (Malvern) Limited Director • Racehorse Trainer | 22 Dec 2015←10 Years→Current | Active | |
| O'Neill Racing Ltd Director • Racehorse Trainer | 2 Nov 1991←34 Years→Current | Active | |
