| Company | Timeline | Status | |
| Natuna UK (Kakap 2) Limited Director • Geophysicist | 3 Jun 2009←1 Month→14 Jul 2009 | Active | |
| Hornabrook Resources Limited Director • Exploration Consultant | 2 Jun 1997←18 Years→18 May 2016 | Active | |
| Beacon Resources Limited Director • Exploration Consultant | 20 Nov 1996←19 Years→18 May 2016 | Active | |
| Natuna UK (Kakap 2) Limited Director • Exploration Consultant | 26 Mar 1996←8 Years→31 Dec 2004 | Active | |
| Talisman UK (South East Sumatra) Limited Director • Exploration Consultant | 18 May 1995←3 Years→27 Jul 1998 | Active | |
| Novus UK (Kakap) Limited Director • Exploration Consultant | 18 May 1995←14 Years→14 Jul 2009 | Active | |
| Novus UK (Malacca Strait) Limited Director • Exploration Consultant | 18 May 1995←14 Years→14 Jul 2009 | Active | |
| Novus UK (Indonesian Holdings) Limited Director • Exploration Consultant | 18 May 1995←14 Years→14 Jul 2009 | Active | |
| Apache UK Limited Secretary • Unreported | 16 May 1995←2 Months→3 Aug 1995 | Dissolved | |
| Apache UK Limited Director • Exploration Director | 13 Jun 1992←6 Years→17 Dec 1998 | Dissolved | |
