Extinction Rebellion climate-change activists won a legal challenge in London's High Court on Wednesday against a police-imposed blanket ban on protests during its "Autumn Uprising" in the British capital in October.

The court said separate gatherings, even if coordinated by one organization, could not be defined as a single "public assembly" and the officer who set the ban was not present at the scene.

Therefore barring any Extinction Rebellion protest in London other than at Trafalgar Square was unlawful and would be quashed, it said.