Greenpeace activists halt coal train and climb aboard

Fifty Greenpeace activists have stopped and occupied a freight train delivering 1,500 tonnes of coal to Nottinghamshire's Cottam power station. The action comes as David Cameron prepares to speak at a high-profile climate summit in New York today.

The activists used emergency signals to flag down the 400-metre-long coal train as it was slowing down along rail sidings leading to the plant. The main coal supply route to the power station - which is run by French energy giant EDF - has now been cut off.

Dozens of Greenpeace campaigners have climbed onto the open coal wagons, and have started unloading the train’s cargo. The charity says they are carrying enough food and water to stay on the train all day.