6.—(1) The Tribunal may take any one or more of the steps in paragraph (2) in respect of a party, where that party has, without reasonable excuse, failed to comply—
(a)with a direction given under these Rules; or
(b)with a provision of these Rules.
(2) The steps referred to in paragraph (1) are—
(a)where that party is an appellant, dismiss the whole or part of that appellant’s appeal or application;
(b)where that party is the Commission, strike out the whole or part of the response and, where appropriate, direct that the Commission be disqualified from participating in the appeal or application altogether.
(3) The Tribunal must not take any of the steps under this rule in respect of a party unless it has given that party an opportunity to make representations against the taking of any such steps.