The Criminal Procedure and Investigations Act 1996 (Preparatory Hearings) (Interlocutory Appeals)Rules 1997
These Rules make provision for regulating the practice and procedure of the criminal division of the Court of Appeal for the purposes of appeals against rulings as to the admissibility of evidence or as to questions of law, made at preparatory hearings in cases which are complex or involve a lengthy trial, under section 31 of the Criminal Procedure and Investigations Act 1996 (c. 25).