Advertorial: Selling my soul to Backyard Cinema for a burger and a beer

Londoners would be hard pressed to make it home from work this summer without inadvertently wandering into an open-air cinema screening, so prolific are they at this stage. They're happening literally everywhere: in fields, on rooftops, in markets, in ladies' changing rooms, underwater, in bowls of soup, in space and in the space between spaces.

But only one of the brands currently peddling