Glastonbury Festival kicked off today and will continue until Sunday, leaving fans to pray that they don’t get submerged in mud as they don their wellies in readiness and venture out to catch the bands. Electrical Storm performers U2 lived up to their song’s name when they braved torrential rain and stormy skies in 2011 – and that’s just one of a series of mind-blowingly bad weather episodes over the years.

However, it turns out that getting caught in the mud that the festival is notorious…