4(1)For the purpose of any proceedings before the disciplinary committee in England and Wales or Northern Ireland the committee may administer oaths and any party to the proceedings may sue out writs of subpoena ad testificandum and duces tecum, but no person shall be compelled under any such writ to produce any document which he could not be compelled to produce on the trial of an action.
(2)The provisions of section 49 of the [1925 c. 49.] Supreme Court of Judicature (Consolidation) Act 1925 or of the [1854 c. 34.] Attendance of Witnesses Act 1854 (which provide special procedures for the issue of such writs so as to be in force throughout the United Kingdom) shall apply in relation to any proceedings before the disciplinary committee in England and Wales or, as the case may be, Northern Ireland as those provisions apply in relation to causes or matters in the High Court or actions or suits pending in the High Court of Justice in Northern Ireland.
(3)For the purpose of any proceedings before a disciplinary committee in Scotland, the committee may administer oaths and the Court of Session shall on the application of any party to the proceedings have the like power as in any action in that court to grant warrant for the citation of witnesses and havers to give evidence or to produce documents before the committee, and for the issue of letters of second diligence against any witness or haver failing to appear after due citation, to grant warrant for the recovery of documents, and to grant commissions to persons to take the evidence of witnesses or to examine havers and receive their exhibits and productions.