Plot: Sean Fletcher goes wild in the Hambleden Valley in Buckinghamshire with a whistlestop trike tour of a chocolate box landscape that has been the beautiful backdrop for many TV dramas and films. But how can we breathe new life into the area? Sean finds out how the old cottage industry of lace-making is poised for a comeback, and he saddles up to meet a couple opening up their farm to enable safer riding in this corner of the countryside