Dairy-free alternatives to milk are no longer just for those with lactose intolerance. They’re now part of a lifestyle that incorporates the promise of good lifestyle, reduced environmental impact, and better treatment of animals – one that Sweden-born brand Oatly is successfully tapping into.

Seitan and Fabanaise – that’s ‘wheat meat’ and mayonnaise made with chickpea water – might not have reached the shelves of the average Tesco yet, but veganism is infiltrating the mainstream. How can companies step up to meet the needs of more than half a million Brits who are vegan?

The global shift to a Western diet rich in meat and dairy is putting unprecedented pressure on the planet to feed a growing population. Could a more sustainable diet resolve health and hunger crises around the world? And would people really be willing to switch to a greener menu?

Just off Melbourne’s über-cool Brunswick Street, hipsters are queuing outside cult café Smith & Deli. But while the menu might be based on New York-style cuisine – pastrami sandwiches and home-cooked lasagne – here, things are a little different. Everything sold at Smith & Deli is 100% vegan.