| Company | Timeline | Status | |
| Martin Contracting Services Ltd Director • Consulting Engineer  | 1 Feb 2010←8 Years→13 May 2018  | Active  | |
| Martin Contracting Services Ltd Secretary • Unreported  | 9 May 2005←4 Years→23 Nov 2009  | Active  | |
| R.J. Maxwell & Son Limited Director • Director  | 24 May 1950←57 Years→31 Jul 2007  | Dissolved  | |
