| Company | Timeline | Status | |
| Marriott Geotechnical Drilling Ltd Director • Company Director | 25 Oct 2016←8 Years→31 Dec 2024 | Active | |
| P R Marriott Drilling Limited Director • Chartered Engineer | 1 May 2009←15 Years→31 Dec 2024 | Active | |
| Proteum Limited Director • Consultant | 9 Oct 2008←2 Years 1 Month→3 Dec 2010 | Active | |
| Simmons Edeco Energy Limited Director • Director | 25 Apr 2000←6 Years→22 Dec 2006 | Dissolved | |
| Unity Well Integrity Europe Limited Secretary • Unreported | 22 Dec 1995←11 Months→10 Dec 1996 | Active | |
Kenting Drilling Services Limited Secretary • Unreported | 17 Oct 1995←1 Year 1 Month→10 Dec 1996 | Liquidation | |
| Unity Well Integrity Europe Limited Director • Managing Director | 19 Oct 1994←12 Years→22 Dec 2006 | Active | |
Kenting Drilling Services Limited Director • Managing Director | 5 Jun 1991←5 Years→10 Dec 1996 | Liquidation | |
