25.—(1) A discounted amount is payable instead of the amount prescribed under regulation 24(1) if payment is made before the end of the period of 29 days beginning with the day on which the notice is given.
(2) The discounted amount is —
(a)in a case where regulation 24(1)(a) applies, £300, and
(b)in a case where regulation 24(1)(b) applies, £80.
(3) If the last day of the period specified in paragraph (1) does not fall on a working day, the period for payment of the discounted amount is extended until the end of the next working day.