Infrastructure Planning Commission: Advice note one: Local impact reports (March 2010).
Note: The IPC was abolished on 1 April 2012 and all IPC advice notes were withdrawn. The advice notes are expected to be re-issued as Planning Inspectorate (National Infrastructure) advice notes.
http://infrastructure.independent.gov.uk/wp-content/uploads/2010/05/Advice-note-1-LIR.pdf