Power to determine an appeal without a hearing
23.—(1) The Tribunal may determine an appeal, or any particular issue, without an oral hearing–
(a)if both parties so agree in writing; or
(b)in the circumstances described in regulation 12; or
(c)if it appears to the Tribunal that the issues raised on the appeal have been determined on a previous appeal brought by the appellant on the basis of facts which did not materially differ from those to which the appeal relates and the Tribunal has given the parties an opportunity of making representations to the effect that the appeal ought not to be determined without a hearing.
(2) The provisions of regulations 25(2) and 26(5) shall apply in respect of the determination of an appeal, or any particular issue, under this regulation.