These are the 10 richest people in the world

Bill Gates has been declared the richest man in the world for the 16th time, by Forbes.

This year's rich list features a record 1,826 billionaires across the world, 197 of them women (29 self-made).

Included in the list for the first time are the two co-founders of taxi app Uber - Travis Kalanick and Garrett Camp - and the first person they hired, Ryan Graves.

Kalanick and Camp have a net worth of $5.3billion (£3.4billion) each, while Graves, who answered a job advert on Twitter five years ago with the words "hire me :)" is now worth $1.4billion (£0.91billion).