# Interpretation Act 1978, Section 4: Time of commencement.


An Act or provision of an Act comes into force—
(a) where provision is made for it to come into force on a particular day, at the beginning of that day;
(b) where no provision is made for its coming into force, at the beginning of the day on which the Act receives the Royal Assent.

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Source: https://www.legislation.gov.uk/ukpga/1978/30/section/4 (the official version)
Page: https://openlegislation.uk/interpretation-act-1978/section-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.