This all depends on how obstinate your tenant is, at Landlord Action 61% of the time, when we serve a Section 8 Notice for rent arrears (14 day notice) or section 21 Notice (2 month’s notice) ending the tenancy, the tenants will vacate the property.
If they ignore the notice served, then the landlord will have to apply to the court for a possession order.
It will take generally between 6-8 weeks for the judge to grant a possession order under section 8/section 21.
Tenants can ignore the possession order granted by the court, which is normally a 14 day order and sometimes tenants are told to stay put by the council and encourage the landlord to go to eviction. In these cases the landlord has to go to the final step 3 to apply for an eviction date with the bailiff, this can take between 5-10 weeks, depending on the court your at and how many bailiffs there are at that court working.
So generally from first serving the eviction notice, to going to court obtaining a possession order, then apply for an eviction date, it can take up to 5 months if undefended case.