A seemingly never-ending stream of deer bound across a main road, bringing traffic to a standstill. Two stags trot down a hospital corridor. A deer herd invades a surburban garden.

There’s a new brand of wildlife video doing the rounds on social media - and the generally positive image enjoyed by the animals means the scenes may delight onlookers.

But many experts say the largely uncontrolled growth of Britain’s deer population creates significant ecological dangers.