| Company | Timeline | Status | |
| Ultraclone Limited Director • Professor | 31 Mar 1992←24 Years→17 Jul 2016 | Active | |
Rossiter's Vineyard Limited Director • University Professor/medical Practioner | 20 Mar 1992←24 Years→1 Nov 2016 | Dissolved | |
Southampton University Services Limited Director • Professor | 23 Jan 1992←4 Months→16 Jun 1992 | Dissolved | |
