Mumford & Sons have revealed that they suffer from terrible pre-show anxiety. 

The folk-rock band, who have enjoyed phenomenal success over the past year, told Q magazine that it's not uncommon for them to experience nausea, panic attacks and have even forgotten words to their own songs:

"(We suffer from nerves by) forgetting words. Shaking, panic attacks. Sweating a lot. Crying a little bit. A desperate need for the toilet. But forgetting words is the worst. It happens a lot, especially when we do live television."

The band will perform to a sizeable audience this evening, June 30, in London's Hyde Park at 7pm and you can watch them play 'Little Lion Man' at the Grammy museum here: