(1) If the creditor or owner under a regulated agreement wants to be able to recover from the debtor or hirer post-judgment interest in connection with a sum that is required to be paid under a judgment given in relation to the agreement (the 'judgment sum'), he -
(a) after the giving of that judgment, shall give the debtor or hirer a notice under this section (the 'first required notice'); and
(b) after the giving of the first required notice, shall give the debtor or hirer further notices under this section at intervals of not more than six months.
(2) The debtor or hirer shall have no liability to pay post-judgment interest in connection with the judgment sum to the extent that the interest is calculated by reference to a period occurring before the day on which he is given the first required notice.
(3) If the creditor or owner fails to give the debtor or hirer a notice under this section within the period of six months beginning with the day after the day on which such a notice wa
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