| Company | Timeline | Status | |
| Mycardium Research Ltd Director • Professor Of Perioperative Medicine | 12 Jun 2019←3 Years→19 Jul 2022 | Dissolved | |
| Mycardium Limited Director • Professor Of Perioperative Medicine | 23 May 2019←3 Years→19 Jul 2022 | Dissolved | |
| SB3P Ltd Director • Director | 21 Dec 2017←3 Years→6 Jul 2021 | Dissolved | |
Nationwide Medical Consulting Limited Director • Consultant Anaesthetist | 8 Jul 2014←3 Years→2 Jan 2018 | Dissolved | |
| Lawin-O'Brien Limited Director • Medical Doctor | 24 Nov 2011←13 Years→Current | Active | |
