The Secretary of State for Social Services, with the concurrence of the Commissioners of Inland Revenue, in exercise of powers conferred by sections 4(5), 14(1)(a), 15(1) and (2) and 106(2) of the National Insurance Act 1965, which are now vested in him and of all other powers enabling him in that behalf, after considering the report of the National Insurance Advisory Committee on the preliminary draft submitted to him in accordance with section 108 of the said Act of 1965, hereby makes the following regulations:—