The National Health Service Contributions Act 1961 (Appointed Day) Order 1961
The Lords Commissioners of Her Majesty's Treasury, in exercise of the powers conferred on them by subsection (7) of section 1 of the National Health Service Contributions Act, 1961(a), and of all other powers enabling them in that behalf, hereby order as follows:— (a) 9 & 10 Eliz. 2. c. 13.