Where an offence is believed to have been committed, proceedings must usually be brought within six months of the commission of the offence (Section 138 of the 2002 Act).
Pan gredir bod trosedd wedi'i chyflawni, fel arfer rhaid i achos gael ei ddwyn o fewn chwe mis i gyflawni'r drosedd (Adran 138 o Ddeddf 2002).