Prospective
9E+W+SIn section 50 (special powers of arrest) for subsection (2) there shall be substituted the following—
“(2)A constable may arrest without warrant any person whom he has reasonable cause to suspect to be committing an offence under section 4, 5, 18, 19, 19A, 20, 21 or 47(2) of this Act and, for the purpose of exercising the power conferred by this subsection, may enter any place.”.