9. What we are required to consider is whether leave should be granted to appeal to this Court. We have listened very carefully to a detailed argument presented by senior counsel on behalf of the respondent, the tenants. In the end, I am not persuaded that this is a case where leave should be granted. It is a case where the test, the two-pronged test, as to leave to appeal has not been satisfied. In particular, I am not satisfied that substantial injustice will be done if the decision is unreversed, for there will be a legal determination of it. But in relation to the decision itself, and as to whether it was attended with sufficient doubt as to justify granting leave, although it is not customary to say anything in detail as to the reasons for deciding an application and in particular one which is refused, perhaps, on this occasion, for the assistance of the judge who ultimately tries it and bearing in mind the absence of a transcript of the reasons of the trial judge, it should be made clear that although the outline of argument referred to an error as to an election to proceed contained in the clause, that is Clause 9, the real error relied upon is that upon a reading of the whole clause it was not contemplated that there would be any decrease in rents and that the only variations in rent would be increases.