6In section 101 of that Act (appeals from social security appeal tribunal to Commissioner on point of law) in subsection (5) (powers of Commissioner when holding that there has been error of law)—
(a)after the words “point of law” there shall be inserted the words “he shall set it aside and”; and
(b)after paragraph (b) (Commissioner to refer case to tribunal with directions for determination) there shall be added the words—
“and, subject to any direction of the Commissioner, the tribunal on a reference under paragraph (b) above shall consist of persons who were not members of the tribunal which gave the erroneous decision.”