Acts Interpretation Act 1931

Where an Act repeals any other enactment then, unless the contrary is expressly provided, such repeal shall not – revive anything not in force or existing at the time such repeal took, or shall take, effect; affect the previous operation of any enactment so repealed or anything duly done or suffered under any enactment so repealed; affect any right, privilege, obligation, or liability acquired, accrued, or incurred under any enactment so repealed; affect any penalty, forfeiture, or punishment incurred in respect of any offence committed against any enactment so repealed; or affect any investigation, legal proceeding, or remedy in respect of any such right, privilege, obligation, liability, penalty, forfeiture, or punishment as aforesaid – and any such investigation, legal proceeding, or remedy may be instituted, continued, or enforced, and any such penalty, forfeiture, or punishment may be imposed as if the repealing Act had not been passed.

Where an enactment expires or has expired, then, unless the contrary is expressly provided, the expiry shall not – revive anything not in force or existing at the time the expiry took, or takes, effect; affect the previous operation of any enactment so expired or anything duly done or suffered under any enactment so expired; affect any right, privilege, obligation, or liability acquired, accrued, or incurred under any enactment so expired; affect any penalty, forfeiture, or punishment incurred in respect of any offence committed against any enactment so expired; or affect any investigation, legal proceeding, or remedy in respect of any such right, privilege, obligation, liability, penalty, forfeiture, or punishment – and any such investigation, legal proceeding, or remedy may be instituted, continued, or enforced, and any such penalty, forfeiture, or punishment may be imposed as if the enactment had not expired.

Subsections (1) and (2) apply to and in relation to any regulations that – are rescinded or expire; or cease to have effect owing to the repeal or expiry of the enactment under which the regulations are made – in the same way as those subsections apply to and in relation to enactments that are or have been repealed or, as the case may be, that expire or have expired.

Where an Act, or a regulation or other instrument or document made, issued, or granted under an Act, is expressed to expire or cease to have effect on a particular day, it shall expire or cease to have effect at the end of that day.