29. A council may prosecute proceedings for any offence under this Act.
30. Summary proceedings for an offence under or by virtue of this Act other than such an offence which is also triable on indictment under section 31(2) may be commenced at any time—
(a)within the period of three years from the commission of the offence; or
(b)within the period of 12 months from the date on which evidence which the prosecutor thinks is sufficient to justify a prosecution comes to the knowledge of the prosecutor.