| Company | Timeline | Status | |
| Gibco Bio-Cult Diagnostics Limited Director • Director | 24 Jul 1991←11 Months→30 Jun 1992 | Liquidation | |
| Life Technologies (Europe) Limited Director • Director | 21 Jul 1991←11 Months→30 Jun 1992 | Liquidation | |
| Gibco Leasing Limited Director • Financial Director | 6 Jul 1990←1 Year 12 Months→30 Jun 1992 | Liquidation | |
| Life Technologies Limited Director • Unreported | 6 Jul 1990←1 Year 12 Months→30 Jun 1992 | Active | |
| Invitrogen Europe Limited Director • Financial Director | 24 Jul 1989←2 Years 11 Months→30 Jun 1992 | Active | |
