This is the terrifying moment dozens of far-right supporters of Tommy Robinson on Saturday boarded a sightseeing bus in Trafalgar Square in London and then climbed onto the roof.

According to the filmer of the video, the men first chased the terrified tourists off the vehicle.

Five people were arrested during the violent protest that saw hundreds of Robinson supporters in a tense stand-off with riot police.

The protesters want to secure the former English Defence League (EDL) leader's release from jail.

protesters take over a tourist bus chase the terrified tourist of then clime on the roof Free Tommy Robinson protest thousands of his supporters show up in Trifalgar square, down Whitehall protesting for him to be set free in central London by jim connor