Marking the centenary of the birth of WH Auden, the poet Paul Farley sets out on a journey across the North Pennines. Following an itinerary suggested by Auden in an article for American Vogue in 1954, he investigates how this once thriving mining area exerted a powerful influence over the young Auden and how it continued to resonate in his poetry. Producer Aasiya Lodhi See also tomorrow night at 11pm