Just had a quick read of Statutory Instrument 2006 No. 652 which has a few amendments to Part P (see 20,21,22.)
Can't understand why "replacing an external door (where the door together with its frame has not more than 50% of its internal face area glazed);"is covered by Part P?
Can't understand why "replacing an external door (where the door together with its frame has not more than 50% of its internal face area glazed);"is covered by Part P?