Hey Agenda - the tenant may not vacate at teh end of 90 days as per their notice, if they don't leave then the PM will have to apply to tribunal for possession of the premises (hearing takes approx. 2 weeks to schedule) and then book in the eviction which the police attend (approx. another 2 weeks to happen). So 90 potentially turns into 120.
Hopefully having difficulties with the tenant will further motivate the PM to get that tenant out of there!!