Tony Buckingham¹

777= £50m Diamond mining

Guernsey-based Buckingham, 52, a former officer in the SAS's marine counterpart the Special Boat Service, introduced the mercenary group Executive Outcomes into several African countries with security problems. Subsequently he acquired a slice of Angola's offshore oil rights and diamond mining rights in Sierra Leone. He is a substantial shareholder in two companies, Heritage Oil and Gas and Diamond Works, and has ploughed millions into British yacht racing, his passion.

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