| Company | Timeline | Status | |
| Stephenson & Roche Geoconsulting Ltd Director • Geologist | 30 Nov 2023←1 Year 11 Months→Current | Active | |
| David Roche Geoconsulting Limited Director • Engineering Geologist | 9 Nov 2001←23 Years→Current | Active | |
| David Roche Geoconsulting Limited Secretary • Engineering Geologist | 9 Nov 2001←23 Years→Current | Active | |
