Section 1 extends only to England and Wales.

Section 11(3) and Schedule 4, section 16 and section 51 extend only to England and Wales and Scotland.

Section 49(2) extends only to Northern Ireland.

Apart from the amendments made by sections 1 and 46, the amendments (and repeals and revocations) made by this Act have the same extent as the enactments and instruments amended (or repealed or revoked).