- The UK asylum appeals backlog reached a record high of over 80,000 cases by late 2025.
- A falling initial backlog shifted pressure to tribunals as refusal rates and appeal volumes climbed sharply.
- Government plans include limiting refused applicants to one appeal per claim to reduce system strain.
(UK) — The UK government reported that the asylum appeals backlog hit a record high of 80,333 cases at the end of December 2025, nearly doubling from 41,987 at the end of December 2024.
That figure measures pending cases waiting in the tribunal system, rather than applications awaiting an initial Home Office decision, and it has become a central pressure point as more refused applicants challenge outcomes through appeals.
Data covering 2025 showed the system shifting from delays at the first decision stage toward heavier strain at appeal, as faster caseworking pushed more people into the tribunals pipeline after initial refusals.
The rise in the appeals backlog coincided with a sharp fall in the initial asylum decision backlog by December 2025, when it stood at 64,426 people, or 48,723 cases. Officials attributed that fall to quicker initial decisions, following a period when unresolved claims accumulated.
The same dataset put the earlier peak for the initial applications backlog at 175,457 in June 2023. By December 2025, the initial backlog was 48% lower year-over-year and 63% below that peak.
Faster initial decisions, however, can mechanically increase appeal volumes when a higher share of those decisions end in refusal, because refused applicants can then file challenges that enter the tribunal queue. That shift has sharpened debate about how the system measures progress, as a falling initial backlog can coexist with an expanding appeals backlog.
Total asylum claims in 2025 reached 100,625 including dependants, a volume that set the context for rising caseloads across both the Home Office and the tribunals. Within that total, initial refusals climbed to 80,000, up from 46,000 in 2024.
The grant rate fell to 42% in 2025, down from 47% in 2024, increasing the share of applicants who left the initial stage with a refusal and an incentive to appeal. Lawyers and charities have long pointed to the interaction between initial refusals and later challenges, and the latest figures added weight to that link.
In 2024, new appeal inflows outpaced the number of cases the tribunal system decided, adding to the appeals backlog that carried into 2025. The Home Office and tribunals recorded 37,000 new appeals in 2024, compared with 16,000 appeals decided that year, even though the number of decisions was 76% higher than in 2023.
Pending appeals continued to climb through 2025, nearing 70,000 by September 2025, doubling year-over-year. The sustained increase left more applicants in limbo while they waited for hearing dates, decisions, or further directions, tightening the link between tribunal capacity and wider asylum system pressures.
Average waiting times for appeals also increased by end-December 2025 compared with end-2024, reflecting the gap between new filings and completed decisions. Over the same period, the appeal success rate in October to December 2025 fell to its lowest level since Q2 2015, a shift that affects both how applicants assess their chances and how the Home Office responds to criticism of decision quality.
Outcome trends have formed part of that debate, because earlier years saw a higher share of refusals overturned at appeal. In 2024, a substantial share of substantive appeal decisions overturned Home Office refusals, a metric often cited by practitioners when arguing that initial refusals can be vulnerable to challenge.
The growing appeals backlog has also fed into accommodation pressures, because many applicants remain eligible for support while their appeal is pending, making it harder to move people out of government-provided housing even when initial decisions speed up. Hotel use remained above 30,000 people at the latest count, falling by 5,000 from September 2025 but rising by 1,000 since Labour took office mid-2024.
Those accommodation figures have become politically charged as ministers seek to reduce the use of hotels while managing local pressures and limited housing supply. Longer waits in the tribunal system can extend the time applicants spend in support, linking the appeals backlog to costs and operational constraints beyond the courtroom.
Home Secretary Shabana Mahmood announced in November 2025 that the government planned to limit refused asylum applicants to one appeal per denied claim, modeled on Denmark, as part of a wider effort she said would “restore order and control.” The announcement framed appeal limits as a way to curb repeat litigation and reduce time spent in the system after refusal, though the figures showed a large volume of first-time appeals already building up.
Alongside that policy plan, the Ministry of Justice recruited more judges, with most expected to start in H2 2025, in a bid to increase tribunal throughput. The government also launched a consultation in January 2025 to raise legal aid fees, which have been fixed since 1996, with changes proposed by end-2025, an issue the legal sector has linked to capacity and access to representation.
Labour also pledged to end hotel use by 2029, tying a long-term accommodation goal to improvements across asylum decision-making, appeals processing, and onward case outcomes. The data underscored a practical constraint for that pledge: even with quicker initial decisions, rising refusals and an appeals backlog can keep people in the system longer.
Experts warned that the current pattern risks reinforcing itself unless tribunal capacity rises enough to match incoming appeals, especially when the grant rate falls and initial refusals rise. Dr. Peter Walsh of the Migration Observatory said refusals “inevitably” add “tens of thousands more appeals” to the “stretched tribunals system,” and he linked that pressure to delays in moving people out of hotels.
Steve Valdez-Symonds of Amnesty International UK described the trend as the “human and financial cost” of deterrence via the 2022 Act and urged repeal. With the appeals backlog now larger than the queue for initial decisions, the tribunal system’s pace has become a defining factor in removals and support eligibility, as more refused applicants remain in accommodation while they wait for appeals to conclude.
