| Company | Timeline | Status | |
| YDP Property Limited Secretary • Engineer | 1 Oct 2001←19 Years→30 Sep 2020 | Active | |
| YDP Property Limited Director • Engineer | 10 Apr 1997←28 Years→Current | Active | |
| Yorkshire Diesel Power Limited Director • Engineer | 16 Jul 1996←29 Years→Current | Active | |
| Yorkshire Diesel Power Limited Secretary • Engineer | 16 Jul 1996←13 Years→28 Sep 2009 | Active | |
