13.—(1) No payment or contract for payment may, for the purpose of promoting or procuring a particular result in the referendum, be made to a voter on account of the exhibition of, or the use of any house, land, building or premises for the exhibition of, any address, bill or notice, unless—
(a)it is the ordinary business of the voter as an advertising agent to exhibit for payment bills and advertisements; and
(b)the payment or contract is made in the ordinary course of that business.
(2) If any payment or contract for payment is knowingly made in contravention of this paragraph, whether before, during or after the referendum—
(a)the person making the payment or contract; and
(b)if such other person knew it to be in contravention of this Order, any person receiving the payment or being a party to the contract,
is guilty of an illegal practice.