Prison Release Changes from 1 October 2026: What It Means

From 1 October 2026, the earliest automatic release point for many people serving a standard determinate sentence in England and Wales moves earlier — and it applies to people who are already in prison, not just those sentenced from that date.

This is the "progression model" brought in by the Sentencing Act 2026. It is a significant change, and it is also being rolled out slowly and with a long list of exclusions. Here is what has actually been confirmed by the Government, and what has not.

What is changing

Under the progression model, the earliest release point for a standard determinate sentence — a fixed-term sentence with a definite end date — shifts as follows, according to the Ministry of Justice:

If your automatic release point is currently 40% or half of the custodial term, the earliest release point becomes one-third.
If your automatic release point is currently two-thirds — which applies to certain sentences of four years or more — the earliest release point becomes one-half.

The House of Commons Library confirms these changes "will apply both to eligible offenders already in prison and those entering the system in future". The start date is 1 October 2026. It was originally expected earlier and was pushed back.

The sentence is now in three stages

The progression model does not simply move a release date. The Ministry of Justice describes a sentence as running in three stages: time in prison custody; a period of intensive supervision in the community; and a final period on licence.

What the change does, in the MoJ's words, is alter "the amount of time offenders will spend in prison (stage 1) before entering intensive supervision in the community (stage 2)". The total length of the sentence does not shrink. What changes is how much of it is served inside.

Who is excluded

A great many people are excluded, and this is where families are most often given false hope.

Excluded sentence types

Life sentences
Extended Determinate Sentences (EDS)
Sentences for Offenders of Particular Concern (SOPC)
Imprisonment for Public Protection (IPP) sentences

Excluded offences

Even on a standard determinate sentence, the offence itself may exclude you. The published list of excluded offence categories includes:

Unlawful killing offences, including manslaughter and causing death by dangerous or careless driving
Rape and serious sexual offences under the Sexual Offences Act 1956 and 2003
Child sexual abuse offences, including abuse of a position of trust and sexual exploitation of children
Grooming offences, including meeting a child following sexual grooming
Indecent assault under the Sexual Offences Act 1956
Other serious violent offences, including solicitation of murder, child cruelty and infanticide
Attempting, conspiring or inciting any of the above

The Ministry of Justice says more than 18,000 offenders are excluded on the basis of their offence.

If you are serving more than one sentence

This is the most commonly misread situation. People serving multiple sentences may still see a changed release date if some of those sentences fall outside the exclusions. Mixed cases are genuinely complicated, and a general rule will not tell you the answer — the calculation does. A release date review is built for exactly this.

Nobody is released all at once

Even for those who are eligible, the change is not switched on for everybody on 1 October. The Government is implementing the model in ten tranches between October 2026 and June 2027, with each tranche bringing the new law into force for a different group based on sentence length. Its published estimate is around 4,500 releases across all ten tranches — roughly 700 in the first tranche, falling to a few hundred in the later ones.

So the tranche you fall into depends on your sentence length, and that determines when your date is recalculated — not the 1 October date itself.

What "earned" release actually means right now

The Government has described this as an "earned progression model" — the idea being that release at the earliest point is not automatic, and that behaviour in prison affects it. Be careful here, because the detail does not yet exist. As of the House of Commons Library briefing dated 4 September 2026, the Government's position is that "further details on how a prisoner will gain credit will be set out in due course." Anyone telling you exactly how to earn or lose days under this scheme is guessing.

Behaviour inside now matters more than ever, which also makes prison adjudications worth taking seriously rather than accepting without advice.

Release is not the end of supervision

The intensive supervision stage is real, and it is stricter than many people expect. Probation can impose prohibitions on contact with victims and their families, residence requirements, alcohol and random drug testing, driving prohibitions and venue bans, restriction zones, and electronic tagging with a presumption in favour for all. For rape and child sexual offences there is 12-month GPS trail monitoring. Recall remains available where someone "cannot be safely managed in the community".

Residence requirements are where release plans most often break down. If probation says an address is not suitable, there are grounds that can be argued — see probation address appeals and release accommodation.

What this means for you

If you or a family member is serving a standard determinate sentence for an offence that is not on the exclusion list, the release date may move — but you will not find out from a news story. You will find out from the recalculated sentence calculation, which the prison produces. Ask for an up-to-date copy.

If the sentence is a life sentence, an EDS, an SOPC or an IPP, this change does not apply. If the offence is on the excluded list, the change does not apply either, whatever the sentence length.

If there is more than one sentence in the mix, or the paperwork has ever been wrong before, that is the situation most worth having checked properly. Release date errors happen, and they are usually found by reading the calculation sheet against the sentencing remarks.

This article is general information about the law and policy in England and Wales, correct at the date of publication. Release rules are changing during 2026 and 2027. It is not legal advice on any individual case, and Case Review UK is not a substitute for a solicitor.