| Company | Timeline | Status | |
| Prestwick Flight Support Limited Director • Facilities Director | 17 May 2021←4 Years→Current | Active | |
| Tarbolton Estates Limited Director • Director | 19 Jul 2019←1 Year 10 Months→3 Jun 2021 | Active | |
| SPS (Ayr) Limited Director • Director | 19 Jul 2019←2 Years 8 Months→31 Mar 2022 | Active | |
| Wallace, McDowall Limited Director • Director | 19 Jul 2019←2 Years 8 Months→31 Mar 2022 | Active | |
| Pioneer Flying Company Limited Director • Facilities Director | 30 Jun 2019←6 Years→Current | Active | |
| Prestwick Flying Club Limited Director • Facilities Director | 19 Nov 2017←7 Years→Current | Active | |
| Wallace, McDowall Limited Director • Facilities Director | 31 Jul 2015←3 Years→21 Jun 2019 | Active | |
| Tarbolton Estates Limited Director • Facilitys Manager | 18 Jun 2014←5 Years→21 Jun 2019 | Active | |
