Hundreds freed under Sentencing Act 2026, governors fear quick returns

On 1 October 2026 the UK began releasing prisoners after they had served 40 per cent of their determinate sentences under the Sentencing Act 2026. The change applies to most adult offenders in England and Wales and reduces the previous automatic release point from the halfway mark by ten percentage points. The prison population stood above 88,000 at the start of the month, with facilities operating beyond certified normal accommodation of roughly 79,000 places.

The government introduced the measure to relieve sustained pressure on the estate. Those convicted of unlawful killing are excluded from the scheme. Hundreds of inmates left custody on the first day of operation, with further tranches scheduled weekly as prisoners reach the new threshold.

Prison governors who oversaw the last early-release programme have told the BBC that many of those freed returned to jail quickly. One governor in the Midlands described the pattern as a revolving door and said the churn is what stresses him out. The returns came from reoffending and breach of licence conditions, often within weeks of release. Governors say the pattern was most pronounced among prisoners serving short sentences for theft, drug offences, and violence against the person.

Probation services will supervise the new cohort. The service is already managing high caseloads across England and Wales, with some officers responsible for more than 50 individuals. Ministers say the 40 per cent threshold is calibrated to reduce the population without compromising public protection. Critics argue the evidence from the previous scheme suggests the opposite may occur.

The Ministry of Justice has not published a formal impact assessment for the 40 per cent threshold. The previous scheme, which released prisoners at the halfway point under temporary powers, produced data on recall rates that governors say showed a sharp increase in returns within weeks. That scheme operated under the End of Custody Supervised Licence mechanism introduced in 2023 and extended in 2024. Under that mechanism, prisoners were released up to 18 days early. The new act makes the 40 per cent release point permanent for standard determinate sentences.

Overcrowding has forced the use of police cells under Operation Safeguard. The measure allows up to 400 police cells to hold prisoners when prison capacity is breached. The early-release timetable was accelerated after the population remained above 88,000 through the summer. The certified normal accommodation of the estate has not increased significantly since 2010, while the population has grown by more than 20 per cent over the same period.

The new act also extends the licence period for those released at the 40 per cent mark. The intention is to keep former prisoners under supervision for longer in the community. Whether that supervision can absorb the additional numbers without dilution of contact time remains untested. The Probation Service says it has recruited additional staff, but union representatives say vacancies persist and training pipelines are stretched. The National Probation Service has a vacancy rate above 15 per cent in some regions.

Victims' groups have raised concerns about notification and safety planning. The Victims' Commissioner has written to the Lord Chancellor requesting assurance that the Victim Contact Scheme will function at the new release point. The Ministry of Justice says victims will be notified in line with existing statutory obligations, but acknowledges that the compressed timeline between sentencing and release reduces the window for safety planning.

The policy will be reviewed after six months. The review will examine recall rates, population trajectory, and probation capacity. Until then, the system operates on the assumption that a lower custody threshold can be managed without a proportional rise in harm. Governors say the test will come when the first cohort reaches the point where the previous scheme saw its highest recall spike, typically between four and eight weeks post-release.