| Company | Timeline | Status | |
| Mark Johnston Engineering Limited Director • Electrician  | 26 Nov 2013←11 Years→Current  | Active  | |
Advance Engineering Systems Ltd Director • Electrician  | 3 Aug 2012←2 Years 9 Months→12 May 2015  | Dissolved  | |
| Advance Engineering Solutions Limited Director • Director  | 16 May 2011←14 Years→Current  | Active  | |
