How to get section 21 and deposits right

[@RentalPosts]

Thanks for information. Tentants don't leave the property after being served section 21 notice two time in successuion (second time to give them time to move out) and tenants still do not move out and have almost three months worth of rent arrears. Property is managed by letting agents from the begning of rental term and deposit holding complies with the law. Can we use online accelarated possesion order? Is there any video on this topic? Thanks

[@Mrlistenandlearn]

what about if there is no deposit and it's a bond- council tenants do this?