13(1)No amount of referendum expenses is to be incurred by or on behalf of a permitted participant except with the authority of—S
(a)the responsible person, or
(b)a person authorised in writing by the responsible person.
(2)A person commits an offence if, without reasonable excuse, the person incurs any expenses in contravention of sub-paragraph (1).
(3)A person who commits an offence under sub-paragraph (2) is liable on summary conviction to a fine not exceeding level 5 on the standard scale.
(4)Where, in the case of a permitted participant that is a registered party, any expenses are incurred in contravention of sub-paragraph (1), the expenses do not count for the purposes of paragraphs 18 to 24 as referendum expenses incurred by or on behalf of the permitted participant.