The band's next show has now been called off too - and it's believed their appearance at Download this weekend is also at risk. The furious former Ozzy Osbourne guitarist insisted he and his band had been ready to play. But event organisers said the band had breached the terms of their visas, and then refused to address the problem.

A sign was posted at the door of the Slade Rooms venue shortly before opening time, saying the show had been called off due to "unforeseen circumstances."