Forbes’ 2010 list of the world’s billionaires comprises a record 164 "ten-figure titans" and some familiar names from the world of finance. Spare a thought though for the 12% whose fortunes dipped last year.

The world's richest man, according to the Forbes list, is Carlos Slim Helu, the Mexian businessman whose personal fortune rose by $18.5bn to $53.5bn over the last 12 months thanks to his ownership of a $23bn stake in telecoms company America Movil.