Supplementary powers of Court

For the purposes of this Part, the Court may, if it thinks it necessary or expedient in the interests of justice26 (a) exercise any or all of the powers conferred by section 20 on the Court (other than those contained in paragraph (d)) but in the application of section 20 to an appeal in any criminal cause or matter, for the words “any party” and “that party” in paragraph (c), there shall be substituted the words “the appellant”; (b) issue any warrant necessary for enforcing any order or sentence of the Court, provided that, (i) in no case shall any sentence be increased by reason of or in consideration of any evidence that was not given at the trial; and (ii) whenever the Court receives further evidence it shall make such order as will secure an opportunity to the parties to the proceedings to examine every witness whose evidence is