The Secretary of State may make rules for the conduct of formal investigations under section 268 and for the conduct of any re-hearing under section 269 which is not held by the High Court or the Court of Session.

Without prejudice to the generality of subsection (1) above, rules under this section may provide for the appointment and summoning of assessors, the manner in which any facts may be proved, the persons allowed to appear, and the notices to be given to persons affected.

Rules of court made for the purpose of re-hearings under section 269 which are held by the High Court, or of appeals to the High Court, may require the court, subject to such exceptions, if any, as may be allowed by the rules, to hold such a re-hearing or hear such an appeal with the assistance of one or more assessors.