| Company | Timeline | Status | |
| Operational Research Society Director • University Professor | 1 Jan 2009←8 Years→31 Dec 2016 | Active | |
| Operational Research Society Director • University Lecturer | 1 May 1999←3 Years→31 Dec 2002 | Active | |
Crown Business Consulting Limited Director • Company Director | 10 Apr 1997←20 Years→28 Nov 2017 | Dissolved | |
