Start by checking whether you need a visa and confirming your right to work or study on the official GOV.UK website. Arrange accommodation, a UK bank account, a National Insurance number if needed, and register with a GP once you have an address; your visa conditions and circumstances may affect the process. If you have children, look into school applications with your local council, and check driving-licence rules before using a car. You may also need to register for council tax, understand your tax position and arrange insurance, so consider professional advice if your situation is complex.