| Company | Timeline | Status | |
| Winter Hill Five Limited Secretary • Secretary | 26 Mar 2002←23 Years→15 Nov 2025 | Dissolved | |
| Gibbs Holdings Limited Secretary • Unreported | 1 Dec 1994←31 Years→Current | Active | |
| Leader Petroleum Limited Secretary • Unreported | 1 Dec 1994←31 Years→Current | Active | |
| Henry Gibbs (Oxon) Limited Secretary • Company Secretary | 1 Dec 1994←31 Years→Current | Active | |
