(1)The prosecutor may appeal to the High Court on a point of law against—
(a)a finding under subsection (1) of section 54 of this Act that an accused is insane so that his trial cannot proceed or continue;
(b)an acquittal on the ground of insanity at the time of the act or omission by virtue of subsection (6) of that section;
(c)an acquittal under section 55(3) of this Act (whether or not on the ground of insanity at the time of the act or omission); or
(d)any order made under section 57(2) of this Act.
(2)An appeal under subsection (1) above shall be—
(a)in writing; and
(b)lodged—
(i)in the case of an appeal under paragraph (a) or (b) of that subsection, not later than seven days after the finding or, as the case may be, the acquittal which is the subject of the appeal;
(ii)in the case of an appeal under paragraph (c) or (d) of that subsection, not later than seven days after the conclusion of the examination of facts,
or within such longer period as the High Court may, on cause shown, allow.
(3)Where the examination of facts was held in connection with proceedings on indictment, subsections (1)(a) and (2)(b)(i) above are without prejudice to section 74(1) of this Act.
(4)A respondent in an appeal under this subsection shall be entitled to be present at the hearing of the appeal unless the High Court determines that his presence is not practicable or appropriate.
(5)In disposing of an appeal under subsection (1) above the High Court may—
(a)affirm the decision of the court of first instance;
(b)make any other finding or order which that court could have made at the time when it made the finding or order which is the subject of the appeal; or
(c)remit the case to that court with such directions in the matter as the High Court thinks fit.
(6)In this section, “the prosecutor” means, in relation to proceedings on indictment, the Lord Advocate.