A sub-letting takes place when a tenant grants a new lease for their property, or part thereof, to an
alternative occupier, for a period less than the residue of the tenant’s lease. The period of the sub-
letting must be at least one day less than the unexpired period of the superior lease. If a tenant
attempts to sub let the property for a period equal to, or more than, the unexpired period of their
own lease; this operates as an assignment of the term and not as a sub-letting.