Climate change protesters have taken to the streets of central London for a third day and police have now arrested 290 activists.
Extinction Rebellion has said it will cause chaos for millions of commuters on Wednesday morning.
The number of people held over the the group's demonstrations surged this week after a police order restricted the protesters to a site at Marble Arch.
Following disruption in the heart of the capital on Monday, groups lingered on Waterloo Bridge and Parliament Square on Tuesday.
Details for Wednesday's protests are yet to be confirmed.
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