161.—(1) The court shall, unless it is satisfied that there are special and substantial reasons for not so doing, order the person to pay—

(a) where a person is convicted of an offence under this Part, to the planning authority, or

(b) where the person is the subject of an order under section 160, to the planning authority or to any other person as appropriate,

the costs and expenses of the action, measured by the court.

(2) Where costs or expenses are to be paid to the authority, they shall include any such costs or expenses reasonably incurred by the authority in relation to the investigation, detection and prosecution of the offence or order, as appropriate, including costs incurred in respect of the remuneration and other expenses of employees, consultants and advisers.