My landlord has changed the locks or told me to get out today. What do I do?Beta*

That's almost certainly an illegal eviction, which is a criminal offence. Call the police if you are locked out or threatened. Then contact your council's housing team or tenancy relations officer the same day, because councils can prosecute and can help get you back in. A solicitor can get an emergency injunction ordering the landlord to let you back in, and legal aid is often available for this. Don't leave voluntarily unless you are in danger. Keep evidence: photos, messages, and the names of witnesses.

Sources: Shelter: how to deal with illegal evictionShelter: illegal eviction and the police