The housing Act 1996 made the creation of an assured short hold tenancy more straight forward by removing the section 20 notice which was formally necessary to confirm that an agreement was that of an assured short hold.
The six month minimum term however still applies in respect of repossession by a landlord even though an agreement may now be drawn up for a shorter period.
A landlord may require possession at the end of the fixed term and in which case the relevant notice must be served on the tenant, your letting agent can carry out the service of this notice on request.
In the event of a landlord requiring possession at the end of a periodic tenancy, then the above procedure must again be employed with the use of the appropriate notice. Again your letting agent can arrange this on request. In the unlikely event of a tenant refusing to vacate on the expire of the notices, then a court order must be obtained before you can take possession of the property. Your letting agent can offer you further advice on request, or put you directly in touch with solicitors. In the event of any necessary court appearances, your letting agent can arrange to represent you on request.