http://www.odpm.gov.uk/index.asp?id=1002882&PressNoticeID=2084#transition

Highlights...

The Government has tightened the time for the building industry to comply with new climate change regulations, Housing and Planning Minister Yvette Cooper announced today.

The revised Part L 2006 regulations come into effect from 6 April 2006. From that date any building work must comply with the revised Part L 2006 regulations unless....

The amendments raise the energy performance of new building by 20 per cent for dwellings and up to 27 per cent for other buildings