| Company | Timeline | Status | |
| McGowan Holdings Limited Director • Director | 21 Dec 2017←7 Years→28 Mar 2025 | Active | |
Inglis Mechanical Handling Limited Director • Director | 1 Nov 2011←7 Years→17 Sep 2019 | Dissolved | |
North British Lifting And Moving Appliance Company, Ltd. (The) Director • Director | 1 Nov 2011←7 Years→17 Sep 2019 | Dissolved | |
| Powervac Limited Director • Director | 1 Nov 2011←13 Years→28 Mar 2025 | Active | |
| Rhet Dumbarton, Lomond And Renfrew Director • Farmer | 10 Mar 2011←14 Years→11 Aug 2025 | Active | |
| James McGowan Engineering Limited Director • Director | 12 Oct 2010←14 Years→28 Mar 2025 | Active | |
| Ladyburn Limited Director • None | 5 May 2010←15 Years→Current | Active | |
| MMNR Limited Director • Director | 2 Feb 2010←15 Years→28 Mar 2025 | Active | |
