| Company | Timeline | Status | |
| D.I.S. Limited Director • Chairman | 1 Jan 2012←5 Years→2 Aug 2017 | Active | |
| CDM Ductwork Limited Director • Director | 2 Nov 2000←16 Years→2 Aug 2017 | Active | |
| Dis Sprinklers Limited Director • Director | 1 Sep 2000←16 Years→2 Aug 2017 | Active | |
| Design Installation Service Limited Director • Director | 1 Apr 1996←15 Years→31 Mar 2011 | Active | |
