After Brexit, Britons and EU citizens who had exercised those free movement rights were told their rights to remain in their host country would be guaranteed in the legally binding withdrawal agreement.

https://www.theguardian.com/world/2026/sep/20/british-man-torn-from-swedish-wife-and-home

Victimblaming.

Sweden is among 13 countries, along with the UK, that opted for a “constitutive” system requiring citizens to formally apply to remain in the country. Others, like Spain, opted for a less onerous “declaratory” system requiring registration in the country, something many Britons would already have done at their town hall.