| Company | Timeline | Status | |
| Fentonghyll Limited Director • Company Director | 1 Oct 1993←9 Years→9 Jun 2003 | Active | |
Whitcrew Management (UK) Limited Director • Chairman - Consultant | 10 Jul 1992←5 Years→17 Apr 1998 | Dissolved | |
Tradchase Limited Director • Company Director | 3 Mar 1992←11 Years→9 Jun 2003 | Dissolved | |
| International Bulk Liquids (Storage And Transport) Limited Director • Company Director | 1 Feb 1992←10 Years→10 Jan 2003 | Active | |
| John H. Whitaker (Management) Limited Director • Chairman-consultant | 10 Jul 1991←9 Years→5 Jun 2001 | Active | |
| John H. Whitaker (Properties) Limited Director • Chairman-consultant | 10 Jul 1991←9 Years→5 Jun 2001 | Active | |
H. Raper Limited Director • Chairman-consultant | 10 Jul 1991←9 Years→5 Jun 2001 | Dissolved | |
| John H.Whitaker (Tankers) Limited Director • Chairman - Consultant | 10 Jul 1991←9 Years→5 Jun 2001 | Active | |
John Harker,Limited Director • Chairman/consultant | 10 Jul 1991←9 Years→5 Jun 2001 | Dissolved | |
| John H. Whitaker (Holdings) Limited Director • Chairman-consultant | 10 Jul 1991←11 Years→9 Jun 2003 | Liquidation | |
