| Company | Timeline | Status | |
| The Craighead Institute Director • Unreported | 12 Apr 2024←1 Year 7 Months→28 Nov 2025 | Active | |
| The Strathmartine Press Limited Director • Retired University Lecturer | 14 Dec 2015←8 Years→5 Nov 2024 | Active | |
Scottish Language Dictionaries Limited Director • University Lecturer | 16 Sep 2005←6 Years→17 Sep 2011 | Converted/Closed | |
