His Majesty may by Order in Council provide for enabling applications made to the Commission under this Act to be determined on behalf of the Commission by such number of the members thereof as may be prescribed by the Order, and the Order may prescribe different numbers in relation to different classes of applications.

Subject to the preceding subsection, the Commission shall with the approval of the Lord Chancellor make rules regulating the procedure of the Commission in determining applications made to them under this Act; and such rules may prescribe time limits within which such applications must be made, and may confer powers on the Commission for enforcing the attendance of witnesses and their examination on oath, affirmation or otherwise, and for compelling the production of documents and the furnishing of information, and for the taking of evidence abroad.

Rules made under this section shall, in the case of applications made under an Order in Council under section two of this Act, provide that the application shall, if the Commission so direct or the applicant so desires, be the subject of an oral hearing, and that the applicant shall be entitled to appear in person or to be represented at the hearing, and the rules may make like provision in the case of other applications to the Commission.

The determination by the Commission of any application made to them under this Act shall not be called in question in any court of law.