01 / The mechanism
Adulthood arrives as a set of cut-offs.
The Joint Committee on Human Rights calls the transition out of care a "care cliff". Young people told the Committee that support can end abruptly and relationships with professionals and carers can be lost as adulthood begins. It recommends moving away from general age-based cut-offs and matching support to individual need.
The wording matters. The problem is a sequence of institutional decisions that may arrive before a person has a stable home, work, education, or trusted adult in place.
02 / The evidence
Need does not follow the calendar.
The Committee cites evidence that 4 in 10 care leavers aged 19 to 21 were not in employment, education, or training in 2023/24. It also cites evidence that 1 in 3 care-experienced young people become homeless within two years of leaving care.
Those figures describe different populations and time windows. Together they show why a legal threshold is a poor proxy for readiness. The outcome remains in view after the state's category changes.
03 / The legal shape
Support continues unevenly.
The law keeps some obligations alive after 18. A former relevant child's local authority obligations include keeping in touch, maintaining a pathway plan, providing a personal adviser, and providing financial assistance where welfare requires it. The ordinary obligations end at 21. If further education or training is in play, some support can continue to 25.
This makes the hand-off hard to read. A right may remain while a familiar service, worker, or place disappears. The Committee heard from care leavers in Leeds who were anxious about 25 because services, including the Archway Hub, would stop then.
04 / The question
Who keeps the thread?
The age ruler is a small test for any public system. At every mark, ask what ends, what continues, and who is expected to notice a change in need. The JCHR recommends replacing general age-based cut-offs with support based on the individual.
The earlier DfE review recorded 112 care-leaver death notifications in England for ages 18 to 24 in 2025, including 22 at age 18. The review warns that notifications are not a complete mortality register and that later deaths may be missed when local authorities lose contact. The number cannot tell us what caused a death. It tells us why the hand-off deserves scrutiny.