| Company | Timeline | Status | |
| Private Hearing And Balance Centre Ltd Director • Audiologist | 25 Apr 2013←1 Year 8 Months→11 Jan 2015 | Active | |
| The National Deaf Children's Society Director • Scientist | 24 Nov 2008←3 Years→23 Jul 2012 | Active | |
| The Commonwealth Society For The Deaf Director • Professor | 1 Oct 2003←8 Years→24 Feb 2012 | Dissolved | |
