| Company | Timeline | Status | |
| Findon Dental Clinic Ltd Director • Unreported | 2 Nov 2022←3 Years→Current | Active | |
| Broadwater Dental Clinic Limited Director • Unreported | 18 Jan 2021←4 Years→Current | Active | |
| Steffin Property Ltd Director • Unreported | 14 Sep 2015←10 Years→Current | Active | |
| Ferring Dental Clinic Limited Director • Unreported | 21 Oct 2011←14 Years→Current | Active | |
| Glenn Steffin Holdings Limited Director • Unreported | 21 Oct 2011←14 Years→Current | Active | |
| East Preston Dental Clinic Limited Director • Unreported | 21 Oct 2011←14 Years→Current | Active | |
