The former journalist at centre of $40 billion tech giant

Duncan Clark was an environmental journalist at The Guardian, pioneering a new way of telling stories through data visualisation and graphics. Now he is at the centre of one of the fastest-growing tech companies in the world - Canva, which offers free online tools for graphic design and has been valued at $40 billion (£32 billion). This is the story of how he built a business, sold it to Canva, and is now leading the company’s ambitious expansion plans in Europe