Flying to the Ends of the Earth

(Channel 4, 8pm-9pm)

New series. Arthur Williams visits more of the world’s smallest and most dangerous landing strips, beginning by exploring Siberia by helicopter. He visits a giant open-cast diamond mine five times deeper than the cliffs of Dover and a scientific expedition at the coldest place on Earth. However, when one of the helicopters crashes in thick snow, the crew are forced to abandon flying in favour of a six-hour drive along treacherous ice roads. Along the way, they meet a couple living off the grid who breed horses.