| Company | Timeline | Status | |
| Mark Johnston Engineering Limited Director • Electrician | 26 Nov 2013←12 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 | |
