| Company | Timeline | Status | |
| Jim Blackett Joiners Ltd Director • Unreported | 23 Nov 2023←1 Year 11 Months→Current | Active | |
| BCM Developments (Glasgow) Ltd Director • Unreported | 17 Mar 2021←4 Years→Current | Active | |
| James G Blackett Properties Limited Director • Unreported | 13 Mar 2009←16 Years→Current | Active | |
| Blackett & Traynor Construction Limited Director • Unreported | 1 Apr 2005←20 Years→Current | Active | |
