Payment of duties
2. An amount of duty communicated to the person liable for its payment in accordance with Article 6 which has not been paid by that person to the Board—
(a)within the period of ten days following the communication to him of that amount; or
(b)before the expiry of any time limit set in connection with the granting of payment facilities in accordance with Articles 10 to 15
shall be recoverable from that person by the Board as a civil debt.