The information requested falls within the responsibility of the National Statistician who has been asked to reply.
Letter from Karen Dunnell, dated 9 October 2007:
As National Statistician, I have been asked to reply to your recent Parliamentary Question requesting that a copy of the latest version of the National Statistics Postcode Directory be placed in the House of Commons Library (156003).
The quarterly Directory is a database file, available in a number of formats, which is used primarily for data processing. The Directory has not been developed for searches of individual postcodes and so does not have a user interface.
A free postcode searching facility is available through the GIGateway website: http://www.gigateway.org.uk/areasearch/default.html which contains all of the data available on the latest August '07 version of the Directory. This will provide you with direct access to the information held on the Directory.
The Parliamentary Constituencies held on the Directory are the current constituencies.
If you require any further information please contact Alistair Calder (email@example.com or 01329 813562).