(1)Subject to the provisions of this section, an appeal lies to a Commissioner from any decision of a social security appeal tribunal or disability appeal tribunal under section 33 above on the ground that the decision of the tribunal was erroneous in point of law.
(2)An appeal lies under this section at the instance of any of the following—
(a)an adjudication officer;
(b)the claimant;
(c)a trade union—
(i)where the claimant is a member of the union at the time of the appeal and was so immediately before the question at issue arose;
(ii)where that question in any way relates to a deceased person who was a member of the union at the time of his death; and
(d)a person from whom it is determined that any amount is recoverable under section 71(1) below.
(3)Subsection (2) above, as it applies to a trade union, applies also to any other association which exists to promote the interests and welfare of its members.
(4)Subsections (7) to (10) of section 23 above have effect for the purposes of this section as they have effect for the purposes of that section.
(5)Section 24 above applies to a decision of a Commissioner under this section as it applies to a decision of a Commissioner under section 23 above.