British citizens who already live in the country and intend to continue to live after the end of the year, as well as those who, until 31 December, arrive in Portugal and intend to reside here, must request the respective Certificate of Registration from the city council of their residence area.

In a press release from SEF and the British Embassy Lisbon it is explains that registration as a resident must be done so that British citizens can demonstrate that they are covered by the Exit Agreement between the European Union and the UK, thus guaranteeing their rights, including the right to work, health care, education and tax benefits after the end of the transition period on 31 December 2020. The EU and the United Kingdom have decided to establish a transitional period, which ends on the end of the year.

British citizens' residence documents that have already been registered will continue to be accepted after the end of the transition period.

The report indicates that there are 34,358 Britons living in Portugal.