"A person who is convicted summarily of an offence under subsection (1) or (2) ... and is not committed to the Crown Court for sentence shall be liable to imprisonment for a term not exceeding 3 months or to a fine not exceeding level 5 on the standard scale or to both and a person who is so committed for sentence or is dealt with as for such a contempt shall be liable to imprisonment for a term not exceeding 12 months or to a fine or both."