This stylish Anglo-Italian entrepreneur was one of the founders of Quintessentially. Charm personified, Del Bono now assists wealthy foreigners invest in London’s finest homes and businesses. His most talked about venture is a £100 million project that will turn 50 St James’s Street into a member’s club, spa and hotel. In the residential sector, he represented a Ukranian who purchased Hanover Lodge in Regent’s Park for £120 million: Britain’s most expensive single family residence. His is a Rolodex that is second to none.