The National Insurance and Supplementary Benefit Act 1973 (Commencement) Order 1973
The Secretary of State for Social Services, in conjunction with the Treasury, (a) in exercise of powers conferred by section 9(5) of, and paragraph 1 of Schedule 6 to, the National Insurance and Supplementary Benefit Act 1973(b), and of all other powers enabling him in that behalf, hereby makes the following Order:-

(a) See s.9(3)(a) of the National Insurance and Supplementary Benefit Act 1973 (c.42) and s.106(5) of the National Insurance Act 1965 (c.51).
(b) 1973 c. 42.
(c) 1965 c. 51.
(d) ...