15 In my opinion, this is a question of general and public importance. I consider that the importance of the questions of law raised by the applicants concerning the scope and operation of cl 62, as set out in their draft notice of appeal, together with the doubts raised about the answers properly to be given to those questions, indicate that there is a sufficient doubt as to whether the trial judge should have here refused leave. I also consider that, if there is error in her Honour's approach, there would be substantial injustice[16] if that error were to be left unreversed, considering not only the circumstances of this case but also the range of cases in which cl 62 may apply. As the issues relate to a question of power, if any error were left to stand, it could affect the validity of a range of decisions made by the Tribunal. I would grant the application for leave to appeal.