Thousands block roads in Extinction Rebellion protests across London

Climate group occupies major landmarks in campaign that could last several days

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Thousands of people have blocked well-known landmarks including Waterloo Bridge in central London, bringing widespread disruption to the capital in a "climate rebellion" that organisers say could last several days.

Parents and their children joined scientists, teachers, long-term environmentalists and other protesters both young and old to occupy major junctions and demand urgent action over the escalating ecological crisis.