For regulation 3 of the principal regulations (determination of amount) there shall be substituted the following regulation—
(3) In respect of a payment of statutory sick pay made in the tax year commencing 6th April 1987, an employer shall be entitled under regulation 2 to an amount equal to 7 per cent. of the payment, that percentage being the total amount of secondary Class 1 contributions estimated by the Secretary of State as to be paid in respect of statutory maternity pay and statutory sick pay by all employers in that year, expressed as a percentage of the total amount of statutory maternity pay and statutory sick pay estimated by him to be paid by all employers in that year.