| Company | Timeline | Status | |
| Betts Hydro Limited Director • Structural Engineer | 30 Jun 2015←10 Years→Current | Active | |
| Betts Frimston Limited Director • Consulting Engineer | 12 Mar 2010←15 Years→Current | Active | |
| Betts Geo Environmental Limited Director • Unreported | 6 Sep 2006←19 Years→18 Dec 2025 | Active | |
| Betts Associates Limited Director • Consulting Engineer | 10 Mar 2003←22 Years→Current | Active | |
