High Court Ordinance

(1)
Except as provided by rules of court, no appeal lies to the Court of Appeal from an interlocutory judgment or order of the Court of First Instance in any civil cause or matter unless leave to appeal has been granted by the Court of First Instance or the Court of Appeal.
(2)
Rules of court may specify a judgment or order of any prescribed description to which subsection (1) does not apply and accordingly an appeal lies as of right from the judgment or order.
(3)
Leave to appeal for the purpose of subsection (1) may be
granted—
(a)
in respect of a particular issue arising out of the interlocutory judgment or order; and
(b)
subject to such conditions as the court hearing the application for leave considers necessary in order to secure the just, expeditious and economical disposal of the appeal.
(4)
Leave to appeal for the purpose of subsection (1) shall not be granted unless the court hearing the application for leave is satisfied
that—
(a)
the appeal has a reasonable prospect of success; or
(b)
there is some other reason in the interests of justice why the appeal should be heard.
(5)
This section does not apply in relation to an interlocutory judgment or order
                of the Court of First Instance made before the
                    commencement
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of this section.