The functions of a magistrates' court under sections 24A to 24C above may be discharged by a single justice.
Subsection (1) above shall not be taken as authorising—
the summary trial of an information (other than a summary trial by virtue of section 24A(7) or 24B(2)(c) above); or
the imposition of a sentence,
by a magistrates' court composed of fewer than two justices.