The Social Security (Contributions, Re-rating) Order 1979
Whereas the Secretary of State for Social Services, with a view to adjusting the level at which the National Insurance Fund stands and having regard to the sums which may be expected to be paid from that Fund in the tax year 1980-81, thinks it expedient to alter the percentage rates for Class 1 contributions under the Social Security Act 1975(a);

And whereas the said Secretary of State, as a result of carrying out in the tax year 1979-80 a review of the general level of earnings pursuant to ...