In section 6(1) of the M1Hydrocarbon Oil Duties Act 1979 (rates of duty on hydrocarbon oil) for “£0.1716” (light oil) and “£0.1448” (heavy oil) there shall be substituted “£0.1794” and “£0.1515” respectively.

This section shall be deemed to have come into force at 6 o’clock in the evening of 19th March 1985.