| Company | Timeline | Status | |
| McDowall Holdings Limited Director • Director | 14 Nov 2012←7 Years→31 Mar 2020 | Active | |
| McDowall Air Conditioning (U.K.) Limited Director • Engineer | 12 Apr 2004←15 Years→31 Mar 2020 | Dissolved | |
| McDowall Limited Director • Engineer | 12 Apr 2004←15 Years→31 Mar 2020 | Dissolved | |
