On 30 March, the Home Office fully opened the Settled Status scheme, for EU citizens and their family members who wish to remain living in the UK after Brexit.
In August, the government launched a trial (with NHS workers, university staff and students in the North West of England) of the EU Settlement Scheme. However, we still do not know for certain the process for applying for the right to remain in the UK after Brexit. The process could depend on the deal that the UK agrees (or otherwise) with the EU; and subsequent legislation.
What we do know is that there are likely to be groups of people who are eligible for settled status, who do not or cannot access it.