(1)An appeal may, within the prescribed time, be brought from any determination or order of a Reinstatement Committee under section 8, or from the refusal of a Reinstatement Committee to make an order, to the umpire or a deputy umpire at the instance—
(a)of an organisation of employers of which the employer concerned was a member on the date on which the application was made to the Reinstatement Committee,
(b)of an association of employed persons of which the applicant was a member on that date,
(c)either of the employer concerned or of the applicant—
(i)without leave in any case in which the decision of the Reinstatement Committee is not unanimous, and
(ii)with the leave of the Reinstatement Committee, or, if the Reinstatement Committee refuse leave and an application for leave is made within the prescribed time to the umpire or a deputy umpire, with the leave of the umpire or a deputy umpire,
and in this subsection “the employer” includes, in a case where different persons have at different periods been the applicant’s former employer, any person against whom an order was made by the Reinstatement Committee.
(2)The umpire or deputy umpire may on any such appeal make any determination or order which a Reinstatement Committee might make under section 8, or may dismiss the appeal, and his decision shall be final.
(3)In considering how to exercise his powers under subsection (2), the umpire or deputy umpire shall, where there has been any change in the relevant facts since the date of the hearing before the Reinstatement Committee, have regard to the facts existing on the date of the hearing before him.
(4)When considering an appeal under this section the umpire or deputy umpire shall sit with two assessors appointed by the Secretary of State, but where one or both of the assessors so appointed is or are absent, then, with the consent in writing of the parties, the appeal may be considered and determined without him or them, as the case may be.