CURRENT RESIDENCE SITUATION IN SPAIN FOR BRITISH CITIZEN DUE TO BREXIT
Based on the Withdrawal Agreement for the withdrawal of United Kingdom of Great Britain and Northern Ireland from the European Union, the Transitional period officially finished on December 31, 2020.
What is the situation now for a British Citizen in Spain?
Let´s see your case.
The general rule is that those British Citizen who have already established lawful Spanish residence or EU citizenship will have unlimited access to the country.
Are you interested in moving to Spain permanently or just few weeks/ months?
Any British Citizens wanting to move to Spain after the Transitional period that is not Green Card holder (EU certificate) will need to apply for a Spanish Residence permit like all other Non EU- Citizens.
Being a Spanish resident id holder will give you absolute freedom for travelling between UK and Spain, even with mobility restrictions.