Tan Hill (grid reference SU081646) is a hill north of Allington in the parish of All Cannings, Wiltshire, England. Its summit is 294 metres (965 ft) above sea level and is the second highest point of the North Wessex Downs AONB hill range (the adjacent Milk Hill is 295 m high), and of Wiltshire. It is also the third highest point between Bristol and London. On 23 August 2009, the BBC programme Countryfile featured an item on analysis by Ordnance Survey to determine whether Milk or Tan Hill is the highest. It was confirmed that Milk Hill is 26 centimetres (10.2 in) higher than Tan Hill.