"6(b)The Respondent will be given notice of the hearing but since it will be limited to the preliminary point he will not be required to attend the hearing or permitted to take part in it."
"The Appeal Tribunal may, either of its own motion or on application, review any order made by it and may, on such review, revoke or vary that order on the grounds that - (a)the order was wrongly made as the result of an error on the part of the Tribunal or its staff; (b).......... (c)the interests of justice require such review."
"where a party to an appeal contended that by calling further evidence it could be shown that the applicant's case fell outside the industrial tribunal's jurisdiction, the appeal tribunal had to decide in each case whether on balance justice required that the new point should be heard; that if it appeared on existing evidence that the decision appealed from was a nullity that would be an overwhelming consideration, but where what was relied on was a chance of establishing a lack of jurisdiction by calling fresh evidence which had always been available the position was less straightforward; that although the issue whether there was a normal retiring age was a matter going to jurisdiction the appeal tribunal did not consider that it would be just for the employers to be permitted to try to persuade the industrial tribunal that the employee was disqualified by section 64(1)(b) of the Act by advancing evidence which skilled advisers had chosen not to adduce before the industrial tribunal; and that, therefore, the application for leave to amend the respondent's notice would be refused."