19For section 63 of the 1984 Act substitute—
(1)A person commits an offence if the person wilfully obstructs any person acting in the execution of a provision of Part 3 or 4 or this Part, or of any regulations, order or warrant made or issued under such a provision.
(2)A person guilty of an offence under subsection (1) is liable on summary conviction—
(a)in the case of an offence of wilfully obstructing a person in the execution of a provision of Part 4 or of any regulations made under a provision of that Part, to a fine not exceeding level 1 on the standard scale, and
(b)in any other case, to a fine not exceeding £20,000.”