The power to make rules conferred by section 144 above shall, without prejudice to the generality of subsection (1) of that section, include power to make provision—
Where any Act expressly confers jurisdiction on any magistrates' court to hear a complaint, rules made under subsection (1)(g) above shall not take away that jurisdiction, but may extend it to any other magistrates' court.
Any Act passed before 16th December 1949, in so far as that Act relates to matters about which rules may be made under section 144 above, shall have effect subject to any rules so made and may be amended or repealed by the rules accordingly; but nothing in the said section shall authorise the rules to reduce the number of justices required for any purpose by any Act.
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Any rules, directions, forms or other instrument having effect immediately before this subsection comes into force as if contained in rules made under section 15 of the Justices of the Peace Act 1949 by virtue of section 15(8) of that Act (rules etc. which previously had effect under the enactments repealed by Part II of Schedule 7 to that Act) shall have effect as if contained in rules made under section 144 above.