| Company | Timeline | Status | |
| Safety-Critical Systems Club C.I.C Director • Consultant Engineer | 16 Dec 2020←4 Years→Current | Active | |
| Jolliffe Assurancy Services Ltd Director • Managing Consultant | 8 Oct 2015←10 Years→Current | Active | |
Jolliffe Associates Ltd Director • Consultant Engineer | 15 Aug 2013←4 Years→22 Aug 2017 | Dissolved | |
Keep Your Wig ON! Ltd Director • Managing Director | 23 Jan 2012←5 Years→28 Mar 2017 | Dissolved | |
