| Company | Timeline | Status | |
| Advanced Process Integration Limited Director • Lecturer | 16 Apr 2021←4 Years→Current | Active | |
| Process Integration Limited Director • Lecturer | 6 Sep 2004←10 Years→19 Dec 2014 | Active | |
| Doyle Consulting (North West) Limited Director • Computer Consultant | 20 Jun 2002←20 Years→28 Jun 2022 | Dissolved | |
