 The most recent building included in the list is in the Quantock Hills . The original 16th century Hestercombe House , was rebuilt in 1909 . In addition to being a listed building the estate is designated Grade I on the English Heritage Register of Parks and Gardens of Special Historic Interest in England . The house was used as the headquarters of the British 8th Corps in the Second World War , and has been owned by Somerset County Council since 1951 . It is used as an administrative centre and is the current base for the Devon and Somerset Fire and Rescue Service . 
