In this Part of this Act, except where the context otherwise requires, the following expressions have the meanings hereby respectively assigned to them, that is to say—

• . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F1

• “Lease” includes an underlease or other tenancy and an agreement for a lease, underlease or tenancy, but does not include a mortgage; and “lessee” and “grant” have corresponding meanings:

• . . . F1

• “Minerals” includes all minerals and substances in or under land of a kind ordinarily worked for removal by underground or by surface working:

• . . . F1

• “Mortgage” has the same meaning as in the M1Law of Property Act 1925:

• . . . F1