Where a notice under section 83 has been served on a tenant containing the information mentioned in subsection (3)(a) of that section, the court shall not entertain proceedings for the possession of the dwelling-house unless they are begun at a time when the notice is still in force.
Where—
the court shall not entertain proceedings for the possession of the dwelling-house unless they are begun after the date so specified and at a time when the notice is still in force.
Where subsection (3) or (4) applies and Ground 2 in Schedule 2 (nuisance or other anti-social behaviour) is also specified in a notice under section 83 or a notice is served under section 83ZA, the court may dispense with the requirements as to service in relation to the partner who has left the dwelling-house if it considers it just and equitable to do so.
A notice under this subsection shall—