“ there must have been a mistake as to an existing fact, including a mistake as to the availability of evidence on a particular matter; the fact or evidence must have been "established", in the sense that it was uncontentious and objectively verifiable; the appellant (or his advisors) must not have been responsible for the mistake; and the mistake must have played a material (though not necessarily decisive) part in the tribunal's reasoning.”
‘If it is alleged that the oral hearing panel either misunderstood the evidence given, or was given inaccurate evidence, such an assertion must be properly particularised, setting out what the panel said or heard, and in what way it was wrong.’