6.—(1) If OFCOM receive notice from a licensee of the licensee's intention to make payment in ten equal instalments of the total sum prescribed in either regulation 4 or regulation 5, the licensee—
(a)shall not be required to make payment at the prescribed time other than in accordance with this paragraph; and instead
(b)shall make payment of the sum in ten equal instalment payments with the first instalment to be paid to OFCOM on the payment date and each subsequent instalment to be paid on the same day in each of the nine consecutive months thereafter (or in a month in which there is no such day, on the last day of the month).
(2) Where at any time the licensee fails to make payment in accordance with paragraph (1)(b), all of the outstanding instalment payments, if any, shall become immediately due for payment.