8.—(1) A person, duly authorised in writing by the Board, may enter on land for the purpose of enabling the Board to carry out its functions under paragraph (f) of subsection (2) of section 5.

(2) Any person who obstructs or interferes with an authorised officer in the exercise of his powers under subsection (1) shall be guilty of an offence and shall be liable on summary conviction to a fine not exceeding ten pounds.