7/8. The Soft Estate. These are the thousands of hectares of roadside verges that edge the motorways and trunk roads in England. Relatively undisturbed, they are proving to be vital refuges for many rare species. Brett Westwood explores these significant habitats and finds out whether the organisations responsible for their maintenance are able to manage them for the benefit of wildlife whilst taking into account road construction and safety. Producer Sheena Duncan Repeated tomorrow at 11am