Air raid shelter
A fortified structure used to protect civilians and military personnel from enemy bombing such as the one surviving at Halton. There are a number of different types of air-raid shelter, ranging from the Morrison shelter for indoor use under a table, to the Anderson shelter made of corrugated iron and dug into a back garden, to brick and cement structures built by companies or on military sites. The Birch furniture company in High Wycombe built air-raid shelters for its workers, which are now in back gardens of Kitchener Road. Sometimes other structures were used as air-raid shelters, the most famous being the London Underground. In Buckinghamshire, ice-houses were used as air-raid shelters, such as the one at Wycombe Abbey School.