(1) The principal Regulations shall be further amended in accordance with the following provisions of this regulation.
(2) In regulation 7 (lower and upper earnings limits for Class 1 contributions)–
(a) for the date of “6th April 1989” there shall be substituted the date of “6th April 1990”, and
(b) for the sums of “£43” and “£325” there shall be substituted respectively the sums of “£46” and “£350”.
(3) In sub-paragraph (a) of regulation 115(1) (reduction of rate of Class 1 contributions payable in respect of earnings of serving members of the forces) for “0.65” in each place where it appears there shall be substituted “0.7”.
(4) In sub-paragraph (b) of regulation 123D (special provisions as to volunteer development workers) for the words “10 per cent” to the end there shall be substituted the words “7 per cent of the lower earnings limit of the tax year in which falls the week in respect of which the contribution is paid”.