5. Abandoning your tenancy
If you leave without giving notice, for example if you move and then put your keys through the letterbox, this is called abandonment.
Abandoning your tenancy doesn't end it. Your agreement with the landlord continues even though you've left.
The landlord can continue to charge you rent if you haven't ended your tenancy correctly. The landlord is obliged to notify housing benefits/universal credit if they believe you have abandoned the property. The money paid towards your rental costs through benefits will be stopped which will then cause rent arrears you are liable for.
Your landlord can hold you responsible for paying the rent until you end the tenancy properly or the property is re-let. Your landlord can apply for a court order to make you pay what you owe.
It will make it harder to find a new home if you leave without giving notice or paying the rent in full.