You might have a stereotype of a festival goer in mind: maybe an inebriated groupie in a band T-shirt trying to sneak backstage; a Kate Moss wannabe decked out in cutting-edge fashion, thick eyeliner ...

Glastonbury might be known as one of the world’s greenest festivals, thanks to its setting in the picturesque Somerset countryside, but every so often the weather turns foul and those verdant fields ...