43The title of section 63 (appeal by prosecutor in case involving insanity) is amended by substituting “where accused found not criminally responsible or unfit for trial” for “in case involving insanity” and subsection (1) of that section is amended as follows—
(a)in paragraph (a), for “insane” substitute “unfit for trial”,
(b)for paragraph (b) substitute—
“(b)an acquittal by reason of the special defence set out in section 51A of this Act;”, and
(c)in paragraph (c), for the words from “on” to “omission” substitute “by reason of the special defence set out in section 51A of this Act”.