73.—(1) Notwithstanding anything to the contrary contained in any Act, whether public general or local and personal, it shall be lawful with the approval of the Board for a local authority which is an authorised undertaker to suspend (subject to the limitations imposed by this section) the annual provision required by law to be made for the repayment of moneys borrowed under this Act.

(2) The suspension under this section of the annual provision aforesaid shall be made for such period and subject to such conditions as the Board shall determine but shall not in any case extend beyond the period during which the expenditure out of the moneys borrowed as aforesaid remains unremunerative.