(1)A person commits an offence if, without reasonable excuse, the person intentionally obstructs an officer in the performance of any of the officer’s functions under sections 14 to 25.
(2)A person commits an offence if—
(a)the person fails without reasonable excuse to comply with a requirement reasonably made, or a direction reasonably given, by an officer in the exercise of a power conferred by sections 15 to 25, or
(b)the person prevents another person from complying with any such requirement or direction.
(3)A reference in this section to an officer includes a reference to a person authorised under section 18(4) to accompany a police or customs officer.
(4)A person who commits an offence under this section is liable—
(a)on summary conviction in England and Wales, to imprisonment for a term not exceeding six months or a fine (or both);
(b)on summary conviction in Scotland or Northern Ireland, to imprisonment for a term not exceeding six months or a fine not exceeding level 5 on the standard scale (or both).