Planning permission in the United Kingdom
Planning permission in the United Kingdom is required in order to be allowed to build on land, or change the use of land or buildings. Within the UK the occupier of any land or building will need title to that land or building (i.e. "ownership"), but will also need "planning title" or planning permission. Planning title was granted for all pre-existing uses and buildings by the Town and Country Planning Act 1947, which came into effect on 1 July 1948. Since that date any new "development" has required planning permission.