§ Mr. Edward Davey
To ask the Secretary of State for the Environment, Transport and the Regions what proportion of houses built in London in each of the past four years has been classified as affordable; and what research his Department has undertaken to determine if this proportion meets local demand for such housing. 
§ Ms Beverley Hughes
The information on affordable houses built is not held centrally. However, the London Research Centre is currently undertaking a research project to assess the extent of housing need in London.