Environmental activists have climbed on top of a train at Canary Wharf station on the DLR in London, in a further act of civil disobedience. Two Extinction Rebellion protesters stood on top of carriages on Wednesday, bringing services to a halt. The pair held a banner reading 'Climate Emergency - Act Now'. Another demonstrator glued his hand to the train and was later removed by police. On Monday, activists set up roadblocks around central London