Martin Hughes-Games explores Avon Gorge's unique plants

Autumnwatch's Martin Hughes-Games has been getting close to nature at Avon Gorge, and discovering the unique plants it supports.

The gorge is a Site of Special Scientific Interest.

It is also recognised internationally and is a Special Area of Conservation under the European Habitats Directive.

It is the only site in the UK where the Bristol onion and Bristol rock-cress grow wild and is home to nationally rare invertebrates including the silky wave moth.