A tenancy to which this Part of this Act applies shall not come to an end unless terminated in accordance with the provisions of this Part of this Act; and, subject to the following provisions of this Act either the tenant or the landlord under such a tenancy may apply to the court for an order for the grant of a new tenancy—
The last foregoing subsection shall not prevent the coming to an end of a tenancy by notice to quit given by the tenant, by surrender or forfeiture, or by the forfeiture of a superior tenancy, unless—
Neither the tenant nor the landlord may make an application under subsection (1) above if the other has made such an application and the application has been served.
Neither the tenant nor the landlord may make such an application if the landlord has made an application under section 29(2) of this Act and the application has been served.
The landlord may not withdraw an application under subsection (1) above unless the tenant consents to its withdrawal.
Notwithstanding anything in subsection (1) of this section,—