Regulation 12(1) of the M1Road Vehicles (Registration and Licensing) Regulations 1971 continues to have effect (until revoked) as if the amendments of section 23 of the M2Vehicles (Excise) Act 1971, as set out in paragraph 20 of Schedule 7 to that Act, which were made by paragraph 16(3) of Part III of Schedule 1 to the M3Finance Act 1987 had been in force when those Regulations were made.