| Company | Timeline | Status | |
| Sproson Consulting Limited Director • Dental Surgeon | 30 Jun 2010←15 Years→Current | Active | |
| Jon Sproson Limited Director • Dental Surgeon | 7 Jun 2010←15 Years→Current | Active | |
| Velvet Dental Centre Limited Director • Dental Surgeon | 22 Dec 2006←2 Years 9 Months→21 Sep 2009 | Active | |
