Prisons at 99 Percent Capacity: How the Government Is Trying to Ease the Strain
Prime Minister Andy Burnham has expanded the list of prisoners exempt from the government's early release scheme, responding to pressure from victims' groups, while the Ministry of Justice fast-tracks plans to keep more serious offenders behind bars. The adult male prison estate in England and Wales is running at roughly 99 percent of capacity, with the total prison population at 88,087, according to figures published by the Lord Chancellor's department in May 2025 (gov.uk).
Burnham made more prisoners exempt from early release after a backlash from victims. He told the BBC he was "confident" the killers of PC Andrew Harper could be excluded from the scheme, after it emerged that they remained eligible. PC Harper, 28, was killed in 2019 when he was dragged by a car down a country road as three teenagers fled the scene of a quad bike theft in Berkshire. The case has become a touchstone in the political row over early release, with the prime minister under sustained pressure from victims' families and Conservative MPs over the scope of the policy (BBC News).
In a written article on 3 August, Burnham said he had "wanted to go even further" but had "pushed to the very limits of what is possible to do" regarding the early release scheme. The remark reflects the legal and operational constraints facing ministers: early release is a lever available under existing sentencing frameworks, but the categories of prisoner who can be released, and the conditions attached, are set by statute and sentencing guidelines rather than by ministerial decree.
The Ministry of Justice said it was fast-tracking a plan to keep more of the most serious offenders behind bars, on top of murderers, anyone on life sentences and those convicted of rape, serious child sexual abuse and grooming offences, who are already blocked from any changes. A spokesperson said "public safety will always be our priority." The department also said it shared "the public's anger" that these options were even being considered, after inheriting a prison system "on the brink of collapse" (BBC News).
The capacity figures tell their own story. The prison population in England and Wales stood at 87,342 on 31 March 2026, according to Ministry of Justice data — of whom 83,881 were male and 3,461 female (justice.gov.uk). In the year to March 2025, the average population was 87,116, marginally down from 87,129 the previous year (gov.uk). These numbers have been broadly flat for two years, but the structural pressure has not eased: the adult male estate remains at near-total occupancy.
The trajectory is upward. The Ministry of Justice projects the prison population will rise to between 95,700 and 105,200 by March 2029, with a central estimate of 100,800 (gov.uk). Updated projections published in December 2025 forecast steady growth across the period to 2030. The remand population — prisoners held before trial or sentencing — is projected to reach 18,200 by the end of September 2026, roughly 2,000 lower than previously estimated (gov.uk). Remand numbers are driven by court backlogs and listing delays rather than sentencing policy, which makes them a pressure point ministers cannot directly control through sentencing changes.
The Ministry of Justice said it was building more prisons while exploring early release options and expanding electronic tagging. The department publishes weekly estate figures and monthly population figures for England and Wales throughout 2026, with the monthly data updated as of 10 August.
The context for these measures is a capacity crisis that has been visible for some time. In August 2024, the BBC reported that fewer than 100 available spaces remained across the male estate (BBC News). Ministry of Justice figures showed the population reached 88,521 in early September 2024, up from 88,350 a week earlier (Reuters). The situation has been deteriorating since at least October 2023, when the population hit 88,225, up 8 percent year on year (Reuters).
All prison and probation matters cited here relate to England and Wales only. Criminal justice is devolved in Scotland and Northern Ireland, where separate administrations operate their own prison systems and early release frameworks under Holyrood (the Scottish Parliament) and Stormont (the Northern Ireland Assembly) respectively.
The political difficulty for Burnham is that each concession on exemptions narrows the pool of prisoners eligible for early release, which in turn reduces the headroom the policy is designed to create. The Ministry of Justice's statement that it inherited a system on the brink of collapse fits with the occupancy data, but it also sets up a tension: the more categories of offender the government shields from early release, the less capacity relief the scheme delivers, and the greater the reliance on new prison construction and tagging to close the gap. That construction pipeline operates on a timescale of years, not weeks. The tagging expansion may offer more immediate flex, but its scale and pace have not yet been specified.
For those working in criminal justice policy, the key question is whether the fast-tracked exclusion list will be defined by offence category or by individual risk assessment. Offence-category exclusions are administratively simpler but blunt instruments; individualised assessments are more precise but resource-intensive at a time when probation services are already stretched. The Ministry of Justice has not yet set out the mechanism, nor confirmed whether legislation would be required to implement it.
