The repeals of section 38(4) of, and Schedule 6 to, the 1971 Act, section 35(4) of, and Schedule 7 to, the 1972 Act and sections 5(6) and 6(7) of the Finance Act 1982, so far as relating to the application of those provisions for the purpose of section 4(1)(g) of either the 1971 Act or the 1972 Act, are deemed to have come into force on 20th March 1991.