What is the legal test for making structural repairs under the Licensing Act?

There are some English cases on the Licensing Acts, but the specific directives of those Acts make them inappropriate here. In Bickmore v. Dimmer (1903) 1 Ch. 158 the issue was between a landlord and his tenant as to whether the latter was in breach of a convenant in a lease that he would make no alterations to the demised premises. Vaughn Williams L.J. by interpretation restricted the operation of the covenant to structural alterations; and having held that, he went on to say that the “covenant relates to the expenditure of money in permanent alterations which affect the structure of the building”. This was sufficient for the judgment in the case, but does not take us very far along the road. Nor do the cases dealing with structural repairs lend much assistance.