ReutersFour people have been arrested after custard and apple crumble were thrown into a display case containing part of the Crown Jewels at the Tower of London.
Police were called shortly before 10:00 GMT on Saturday after the case containing the Imperial State Crown was defaced.
The Metropolitan Police said four people had been arrested on suspicion of criminal damage and the Tower’s Jewel House has been closed to the public while the police investigation continues.
Take Back Power, which describes itself as a new nonviolent civil resistance group, claimed to be behind the law.
The group said it carried out the stunt to demand that the UK government establish a permanent citizens’ assembly – a “People’s House” – with the power to “tax extreme wealth and fix Britain”.
Footage shared by the group on social media showed a protester removing a large aluminum tray of crumble from a bag before slamming it against the glass protecting the Imperial State Crown.
Then another poured a jar of bright yellow custard onto the front of the box.
“Democracy has collapsed,” shouted one protester. Another added: “Britain is broken. We have come here, to the jewels of the nation, to take back power.”
Shocked tourists could be seen reacting to the stunt, while a member of Tower of London staff spoke on the radio.
