His performance on Saturday is billed by London's City Hall as part of the capital's official Royal celebrations and a “Royal Rock Out”.
But former Sex Pistols star Glen Matlock - who is playing at the legendary 100 Club - has told the Mirror he’s “no royalist” and “thinks about the King as much as he thinks about me”.
The 66-year-old legend adds: “You have to ask the question whether we need the monarchy at all.”
