(1)Sections 1(1), 2(1), 3 to 19, 20(1) and 21(1) do not extend to Northern Ireland.
(2)Sections 1(2), 2(2), 20(2) and 21(2) and subsections (4) and (5) of this section extend only to Northern Ireland.
(3)Section 22 and the Schedules have the same extent as the enactments which they amend or repeal.
(4)An Order in Council under paragraph 1(1)(b) of Schedule 1 to the [1974 c. 28.] Northern Ireland Act 1974 (legislation for Northern Ireland in the interim period) which contains a statement that it is made only for relevant purposes—
(a)shall not be subject to paragraph 1(4) and (5) of that Schedule (affirmative resolution of both Houses of Parliament), but
(b)shall be subject to annulment in pursuance of a resolution of either House of Parliament.
(5)In subsection (4) “relevant purposes” means purposes corresponding to those of any of sections 3 to 9 and 11 to 19 or of so much of section 22 and the Schedules as does not extend to Northern Ireland.