s 35 Obstruction.
(1) Any person who— (a) intentionally obstructs an inspector or other person in the exercise of any powers conferred by section 31, or (b) refuses or without reasonable excuse fails to provide facilities or assistance or any information or to permit any inspection reasonably required by an inspector or other person under that section, shall be guilty of an offence. (2) A person guilty of an offence under this section shall be liable— (a) on summary conviction, to a fine not exceeding the statutory maximum; (b) on conviction on indictment, to a fine.