| Company | Timeline | Status | |
| The Scottish Railway Preservation Society Director • Retired Engineer | 30 Aug 2024←10 Months→7 Jul 2025 | Active | |
| The Scottish Railway Preservation Society Director • Electrical Engineer | 14 Sep 2022←4 Months→8 Feb 2023 | Active | |
| The Scottish Railway Preservation Society Director • Consulting Engineer | 6 Nov 2010←1 Year 10 Months→28 Sep 2012 | Active | |
| The Scottish Railway Preservation Society Director • Consulting Engineer | 3 Nov 2001←6 Years→3 Nov 2007 | Active | |
