Unbelievable footage has shown the moment a Just Eat rider threw a food delivery up to a train stranded on the tracks during the UK's hottest day so far.

The video, captured yesterday, showed the food delivery driver come to the rescue of desperate passengers stuck on a Thameslink service heading for Brighton.

The train, which had stopped moving, left many onboard feeling as though they were being 'slow cooked' in 'an oven' amid the sizzling 34C heat.

Assisting the parched travellers, the Just Eat rider is shown standing on the ground with an orange bag full of bottled water, which he carefully aims up at the train which is stuck still on a bridge above him.

The stranded passengers scream in delight each time the man successfully throws a bottle within catching distance as they helplessly stand still at the open train doors during the heatwave.