My Lords, I, too, support this amendment, which raises a short but vital issue of principle, which is whether it is consistent with the rule of law for one party to the proceedings to have the power to determine the scope of the jurisdiction of the tribunal before which it appears. So far as I am aware there is no precedent for such provision, for the very good reason that it is objectionable in principle. It should be a matter for the tribunal to apply whatever criteria Parliament thinks appropriate to determine whether the tribunal can hear an appeal that raises new grounds. I simply cannot understand why the Secretary of State does not trust the tribunal to decide on the application of the criteria which Parliament sees fit to lay down. I, too, hope that the Minister will be able to tell the House that, in the light of the concerns expressed this afternoon, the Government will think again on this important matter before Third Reading.