Check whether each family member needs a visa or permission to live in the UK, and use GOV.UK for the relevant requirements and application process. Before renting in London, make sure you understand right-to-rent checks, the tenancy agreement, deposit rules and council tax for your borough. Arrange school places through the local authority and register with a GP after you move; access to NHS services can depend on your immigration status and visa arrangements. London costs vary widely, so compare rent, travel and childcare, and consider advice from an immigration adviser regulated by the IAA or a solicitor regulated by the SRA if your circumstances are complex.