The Home Office has contacted 1,473 EU citizens holding post-Brexit residency rights to inform them their status was granted "in error." The policy, enacted in late 2025 but only recently surfaced, effectively reverses government decisions years after they were made, placing the burden on individuals to prove they were entitled to rights they already held. Campaign group the3million has put the Home Office on notice of a judicial review. The core mechanism is straightforward: the state made a determination, people built lives on it, and now the state is unwinding that determination unilaterally. Among those affected are dual nationals — Brazilians with Italian citizenship by birth — whom the Home Office now claims were "not Italian" at the time of their applications because they hadn't submitted physical passports. This is a bureaucratic reinterpretation of citizenship itself, applied retroactively. Fabio, a 33-year-old Italian engineer in London since 2018, holds settled status after completing a PhD and five years of residency. His wife's right to live with him now hangs on the Home Office's reversal. An NHS worker researching a PhD faces the prospect of losing her job, her housing, and her right to rent — all because the government reclassified her status years after granting it. The Home Office's position is that those granted pre-settled status "in error" are "not withdrawal agreement beneficiaries" but can provide evidence to the contrary or make a fresh application. This framing is remarkable: the government made the original decision, now says it was wrong, and instructs the affected person to either disprove the government's new position or start over. If refused, they get an appeal — at their own expense. The government has already conceded it was wrong in at least one case taken to an administrative court, withdrawing its claim that a woman's Italian citizenship began only when she received a physical passport after Brexit. That concession undermines the entire rationale for the broader policy, yet the 1,472 other cases remain unresolved. The the3million campaign has launched a CrowdJustice appeal to fund the judicial review, arguing the policy breaches the UK-EU withdrawal agreement. For individuals, the alternative is personal legal action costing upwards of £5,000 — a price extracted from people who did nothing wrong, to correct errors the government made and now won't fix at scale. What emerges is a pattern familiar from the Windrush scandal: administrative decisions made by the state are reversed, the human cost lands on the individual, and the correction mechanism is litigation rather than systemic remedy. The withdrawal agreement was supposed to guarantee these rights. The Home Office is now testing whether guaranteed means anything when enforcement requires each person to individually sue the government.