Development Land Mr. Fisher To ask the Secretary of State for the Environment what estimates he has for the amount of (a) land and (b) buildings in London which are available for development. [39370] Mr. Clappison The Department of the Environment does not hold detailed information on buildings in London available for development. A central register of unused and underused public land was maintained in the Department from 1981 onwards in accordance with part X of the Local Government Planning and Land Act 1980. In 1989 this responsibility was transferred to local authorities.