Extinction Rebellion protesters crowd inside the House of Commons

A photo shared on social media appears to show three members of the controversial group standing next to the Speaker's chair

Footage from inside the chamber shows three people around the Speaker's chair

Extinction Rebellion supporters glued themselves to the Speaker's chair inside the House of Commons.

The activist organization posted a photo of five people inside the chamber, three holding hands as they stood around the famous seat.

Two others beside them held up signs that read "Let the People Decide" and "Citizens' Assembly Now", while all wore T-shirts that read "Let The People Decide".

The group said in a statement posted on its website that the incident was part of a 50-person protest, which also includes others gathered outside Parliament under a large banner.

It had been placed there by an XR member who had climbed scaffolding around Big Ben and read "Let The People Decide - Citizens' Assemblies Now".

A large banner outside the Palace of Westminster this afternoon

Two others chained themselves to the railings.

The protest, which started around midday, calls for a citizens' assembly on climate and costs to 'break the deadlock over Westminster corruption'.

XR says those who entered the room were part of a pre-booked tour group.

The image was shared to his Twitter account with a caption that read, "Extinction Rebellion supporters crowd around the Speakers chair inside the House of Commons.

“Currently in Parliament, a speech is being read calling for a Citizens' Assembly now: 'We are in crisis. We can't afford to go on like this...""