Tintagel among castles at risk unless England can hold back the tide

English Heritage identifies six most vulnerable sites as climate change intensifies coastal erosion

The wonderful wildness of the spot, a rocky Cornish headland pounded relentlessly by Atlantic breakers, has inspired poets, artists and dreamers for many a century.

But Tintagel, immortalised in British mythology as the place of King Arthur's conception, is one of a string of castles at risk of tumbling into the sea as climate change increases the pace of coastal erosion.