| Company | Timeline | Status | |
| Turner Hire Drive Limited Director • Engineer | 18 Nov 1988←12 Months→17 Nov 1989 | Dissolved | |
Wilson & Wylie (Scotland) Limited Director • Engineer | 18 Nov 1988←12 Months→17 Nov 1989 | Dissolved | |
| Turner Aviation Limited Director • Engineer | 18 Nov 1988←12 Months→17 Nov 1989 | Active | |
