(1) Subject to subsection (2) below, so much of any Act (including a local Act) passed before this Act as enables a constable—
(a) to arrest a person for an offence without a warrant; or
(b) to arrest a person otherwise than for an offence without a warrant or an order of a court,
shall cease to have effect.
(2) Nothing in subsection (1) above affects the enactments specified in Schedule 2 to this Act.