3Hydrocarbon oil
(1)In section 6(1) of the [1979 c. 5.] Hydrocarbon 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.
(2)This section shall be deemed to have come into force at 6 o'clock in the evening of 19th March 1985.