If on an appeal under section 16A of this Act the Court of Appeal consider that the appellant should be dealt with differently from the way in which the court below dealt with him—
The fact that an appeal is pending against an interim hospital order under the Mental Health Act 1983 shall not affect the power of the court below to renew or terminate the order or deal with the appellant on its termination.
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The fact that an appeal is pending against a supervision order under section 5 of the Criminal Procedure (Insanity) Act 1964 shall not affect the power of the court below to revoke the order, or of a magistrates' court to revoke or amend it.
Where the Court of Appeal make a supervision order by virtue of this section, the power of revoking or amending it shall be exercisable as if the order had been made by the court below.