v South Staffordshire Waterworks Co. [1885] 16 QBD 359"
It was held that ‘a tenant from year to year is not a tenant for one, two, three, or four years but he is to be considered as a tenant capable of enjoying the property for an indefinite time, having a tenancy which it is expected will continue for more than a year, but which is liable to be put to an end by notice.’

"Consett Iron Co. Ltd. v North-West Durham Assessment Committee [1931] AC 396"
The House of Lords held that consideration should not be limited to the facts of the current year.