The Home Office has begun revoking post-Brexit residency rights from some EU citizens, sending letters that say the rights were granted «in error» and leaving recipients in legal limbo as they try to secure permanent status in Britain.

At least 100 people have been told that their immigration status is being removed, according to notifications issued by the UK interior ministry. The move has prompted concerns that the government is failing to meet its obligations under the withdrawal agreement signed with the European Union, which was designed to protect the rights of EU nationals who were living in the UK before Brexit.

The letters are arriving at a particularly sensitive moment for the people affected. Many of them are coming to the end of the five-year period covered by their «pre-settled status» and are about to apply to upgrade to «settled status», the permanent form of residency available under the EU Settlement Scheme. Being told that their original grant of rights was an error could derail that process and potentially put their continued residence in the UK in doubt.

Recipients include EU citizens who have spent years building their lives in Britain, working, paying taxes, raising families and contributing to local communities. The Home Office has acknowledged that it has sent the notifications, but the full scale of the problem remains unclear. Campaigners and legal experts are concerned that the number of people affected could reach into the hundreds of thousands, although no official estimate has been published.

Under the post-Brexit settlement framework, EU citizens who arrived in the UK before the end of the transition period were required to apply for status to continue living and working in the country. Those with less than five years' continuous residence were granted «pre-settled status» and are expected to reapply for full «settled status» once they reach the threshold. For many, that moment is now arriving, making the timing of the Home Office's letters especially unsettling.

The letters inform recipients that their earlier approval was issued «in error». The phrase has alarmed immigration lawyers because it suggests the Home Office believes it can withdraw rights it had already conferred. It also raises questions about how many other grants may be retrospectively reviewed and about the legal safeguards available to people who receive such letters.

The development has also reignited debate over the treatment of EU nationals in the UK after Brexit. The withdrawal agreement guaranteed their rights, including the right to live, work and study in the UK, and established a system for proving those rights. Critics argue that mass revocation letters, or even the threat of them, undermine the promise of protection that was central to the agreement.

Those affected face uncertainty about their employment, housing, access to healthcare and ability to travel. Immigration status in the UK is tied to a wide range of everyday activities, and a sudden removal of rights can have immediate practical consequences. Even if the revocation is eventually reversed, the stress and disruption caused by the letters can be significant.

The Home Office has not published details of the criteria used to select the cases or the reasoning behind the decision to notify recipients that their status was granted in error. It is also unclear whether the affected individuals will be given an opportunity to challenge the decision before any further action is taken.

The situation is being watched closely by EU institutions and by British immigration law specialists, who say the handling of the cases could set a precedent for how the settlement scheme is administered in the coming years. With the five-year anniversary of the scheme's operation approaching, large numbers of EU citizens are expected to apply for settled status, and the outcome of the current dispute may shape how those applications are processed.

For the people who have received the letters, the immediate concern is simpler: proving that they have a right to remain in the country they now call home. The Home Office's message, however, has cast doubt on that security, leaving many to wait and see what happens next.