Episode 1112



Julia Bradbury walks the Offa's Dyke National Trail to mark its 40th anniversary, and learns about the ancient trees that can be seen along the route. Jules Hudson abseils off the Pontcysyllte Aqueduct near Wrexham, discovering why bats are attracted to the structure. Chris Packham launches the programme's annual photographic competition, John Craven investigates whether imported birds are becoming a threat to Britain's native songbirds and Adam Henson witnesses an attempt to break a sheep-shearing world record.