15For the purposes of section 58 of this Act—
(a)as respects service before 6th January 1964, paragraph (a) of that section shall have effect as if for the words " eighteen pounds" there were substituted the words " fifteen pounds ";
(b)sections 1(1) and 3(1) of, and Schedule 1 to, the [1963 c. 7.] National Insurance Act 1963 shall be deemed not to have come into operation until 5th January 1964.