Some people need to register with the police after arriving in the UK with a visa, or after getting permission to stay for longer in the UK. If you need to register, you must go to the police within 7 days of you: arriving in the UK if you applied for a visa from outside the UK. getting your biometric residence permit if you applied to stay for longer from inside the UK. For more information, visit https://www.gov.uk/register-with-the-police