Punk memorabilia said to be worth £5m ($6m) has been torched in the middle of the River Thames.
Joe Corre, the son of Sex Pistols manager Malcolm McLaren and fashion designer Dame Vivienne Westwood, burnt the items on the 40th anniversary of the Sex Pistols debut single.
The 48-year-old told the crowd that "punk was never meant to be nostalgic".
The protest was aimed at official plans to celebrate the movement's 40th anniversary.
"Punk was never, never meant to be nostalgic - and you can't learn how to be one at a Museum of London workshop," said Mr Corre on Saturday.
"Punk has become another marketing tool to sell you something you don't need.
"The illusion of an alternative choice. Conformity in another uniform."
