54Powers of constables and water bailiffs to enter land
(1)Any constable or water bailiff may enter and remain upon any land in the vicinity of any river or of the sea coast during any hour of the day or night for the purpose—
(a)of preventing a breach of the provisions of this Act; or
(b)of detecting persons guilty of any breach of those provisions.
(2)This section is subject to section 56 of this Act.