Start by checking the visa or immigration permission you need on GOV.UK, including whether you can work, study or bring family members. Before travelling, gather your passport, visa documents, proof of address, birth or marriage certificates and details of any medication or healthcare needs. Once here, arrange suitable accommodation, register with a GP, set up a UK bank account and check whether you need a National Insurance number. Tell your employer or HMRC about your arrival and check council tax, driving-licence and school-registration requirements. For complex immigration or tax matters, consider advice from a regulated solicitor or qualified adviser.