Assuming the tenancy agreement is an Assured Shorthold Tenancy (AST) there are two routes to claiming possession of your property:
Section 8 Possessions
(usually when there are arrears of rent)
Section 21 Possessions
(for when a fixed term tenancy has come to an end)
Both begin with the preparation and service of the relevant notices.
ALL FEES INCLUDE VAT AND COURT FEES (Where applicable)