6.—(1) A person who has made an application may amend it at any time before a decision has been made on it by a notice in writing delivered or sent to the designated office.
(2) Where the application was made by telephone in accordance with Part 1 of Schedule 12, the amendment may also be made by telephone.
(3) Any application amended in accordance with sub-paragraph (1) or (2) is to be treated as if it had been amended in the first instance.
(4) A person who has made an application may withdraw it by notice to the designated office at any time before a decision has been made on it.
(5) Where the application was made by telephone in accordance with Part 1 of Schedule 12 the withdrawal may also be made by telephone.
(6) Any notice of withdrawal given in accordance with sub-paragraph (4) or (5) is to have effect when it is received.
(7) Where a person, by telephone, amends or withdraws an application the person must (if required to do so by the authority) confirm the amendment or withdrawal by a notice in writing delivered or sent to the designated office.