| Company | Timeline | Status | |
| British Dental Association Director • Dental Surgeon | 14 Jul 1992←1 Year 6 Months→21 Jan 1994 | Active | |
R.J. O'Donnell (Estates) Limited Director • Dental Surgeon | 31 Dec 1988←26 Years→2 Jan 2015 | Dissolved | |
| R.J. O'Donnell Limited Director • Dental Surgeon | 31 Dec 1988←37 Years→Current | Active | |
