Hi, thank you for your question. Firstly a tenancy agreement does not need to be in writing and given you have been im the property for quite some time, do not live in the same property as the landlord and pay rent it would be argued that you do have a tenancy agreement. The landlord cannot enter the property without giving you formal notice and must follow strict legal routes to evict you which he does not appear to have done and forcing you out or harassing or intimidating yoi to leave is a criminal offence.To provide you further information please confirm if he has given you a Section 21 Notice?
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Apologies for the delay in responding. The landlord is in breach of his duties and obligations as a landlord, as well as committing a criminal offence by entering the property and taking the keys.
You should not be worried as any eviction will not be immediate. The Section 21 notice must give you 2 clear months before expiring. Even after expiry, you have no obligation to move out and the landlord will have to apply to court for a possession order. Once a possession order is made, even then you have obligation to leave and the landlord will need to apply to court for an eviction notice which gives you the final date and time you must leave by. This process takes months and therefore you are not at immediate risk of being evicted.