14th January: tenant gives notice, says he will move out on 2nd February
20th Jan: pays rent for 21 Jan - 20 Feb.
2 Feb: tenant emails to say he would like to leave at the end of March instead, landlord agrees.
16th Feb: tenant emails landlord to say he has left and doesn't plan to return and landlord should dispose of his possessions in the property, doesn't respond to any further attempts at contact, obvs doesn't pay any further rent.
What is "the official tenancy end date"? (Statutory periodic tenancy fwiw.)