The UK government has reached an agreement with the EU that will protect the rights of EU citizens and their family members living in the UK. It has also reached an agreement with Norway, Iceland and Liechtenstein, and a separate agreement with Switzerland.
These agreements mean that most citizens from the EU, Norway, Iceland, Liechtenstein and Switzerland will need to apply to stay in the UK. They can then continue living their lives here as they do now.
EU citizens should use this tool to find out what to do and when https://www.gov.uk/staying-uk-eu-citizen/y