s 20 Application to Northern Ireland.
(1) It is hereby declared that this Act ... extends to Northern Ireland, . . . (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .