xmlns:atom="http://www.w3.org/2005/Atom"
4(1)Where a notice under paragraph 2(1) is served on a person—
(a)no criminal proceedings for an offence under section 12 may be instituted against the person in respect of the act or omission to which the notice relates before the end of the period within which the person’s liability may be discharged as mentioned in paragraph 2(2) (see paragraph 3(2));
(b)if the liability is so discharged, the person may not at any time be convicted of an offence under section 12 in relation to that act or omission.
(2)A person on whom a monetary penalty is imposed may not at any time be convicted of an offence under section 12 in respect of the act or omission giving rise to the penalty.