Tony Tabatznik and family
Tabatznik, 69, founded Arrow Generics in 2000 and turned it into one of the fastest-growing companies in the pharmaceuticals sector. The Stevenage-based operation was taken over by Watson Pharmaceuticals for $1.75bn in 2009 and Tabatznik now sits on the American company's board. Born in South Africa, he had previously sold his family's Generics (UK) operation to Merck, the German pharma giant, netting £200m. The London resident is also on the board of European Healthcare Group, a profitable nursing home operator.