British citizens who are living in the Netherlands have to apply for a residency permit
All British citizens who are living in the Netherlands and want to continue to do so now that the Brexit has taken place, will have to apply for a residency permit by December 31st, according to the Netherlands' immigration and naturalization service IND.
The United Kingdom officially left the European Union on January 31st. A transition period is now in effect, during which the EU and UK will negotiate exactly what their relationship will look like. This transition period ends on December 31st, 2020. Until that date, UK residents in the Netherlands keep their existing rights and can continue living in the Netherlands with just a valid passport.
But UK nationals who want to continue living in the Netherlands from January 1st, 2021 onwards will need a residency permit. In the coming period, IND will send a personal letter to the around 45 thousand UK nationals living in the Netherlands and their family members, inviting them to file for a permit.
The IND urges British nationals in the Netherlands to make sure their address is correctly registered in the Personal Records Database of the municipality they live in, so that they can be sure that they will receive their letters.
More information can be found here.