| Company | Timeline | Status | |
| F&M Bloodstock Limited Director • Horse Trainer | 23 Oct 2015←10 Years→Current | Active | |
| Fergal O'Brien Training Limited Director • Racehorse Trainer | 12 May 2015←10 Years→Current | Active | |
Fergal O'Brien Racing LLP Designated LLP Member • Unreported | 10 Jun 2011←5 Years→14 Mar 2017 | Active | |
