PART 3SUPERSESSIONS
CHAPTER 1GROUNDS FOR SUPERSESSION
Tribunal decisions31
The Secretary of State may supersede a decision of the First-tier Tribunal or Upper Tribunal which—
a
was made in ignorance of, or was based upon a mistake as to, some material fact; or
b
in a case where section 26(5) (appeals involving issues that arise in other cases) of the 1998 Act applies, was made in accordance with section 26(4)(b)of that Act37.