Plot: As John Craven celebrates 50 years as a BBC presenter, on this – his 1,250th episode for Countryfile - he opens up a treasure trove of memories of some of his favourite parts of Britain. Each location evokes aspects of his life, his career and his passions: discovering a hidden treasure he never knew existed on his childhood doorstep in Yorkshire; indulging his love of verse with a trip to Cambridgeshire to find out more about John Clare, the peasant poet; and revealing his love of history on an ancient Scottish battlefield