11The inclusion in this Act of subsection (2), and the words“for the time being” in subsection (3), of section 23 (which reproduce the amendments of the Vehicles (Excise) Act 1971 made by section 10(2) and (3) of the [1989 c. 26.] Finance Act 1989) shall not be construed as affecting the operation of—
(a)the Vehicles (Excise) Act 1971 or the [1972 c. 10 (N.I.).] Vehicles (Excise) Act (Northern Ireland) 1972, or
(b)any regulations made under either of those Acts,
in relation to any time before 27th July 1989 (the day on which the Finance Act 1989 was passed).