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Can a focus on reducing the UK’s prison population benefit public health?

BMJ 2025; 389 doi: https://doi.org/10.1136/bmj.r1160 (Published 04 June 2025) Cite this as: BMJ 2025;389:r1160
  1. Ella Hubbard
  1. The BMJ

“Chemical castration” hit the headlines after the government published plans to ease prison overcrowding. Ella Hubbard explores this and other proposals

An independent sentencing review commissioned by the UK government has proposed radical reforms to reduce the prison population.1 The review was ordered last October by the justice secretary, Shabana Mahmood, in response to a prison system so overcrowded that prisoners were released early in emergency measures designed to avoid complete collapse.2

Plans to expand the use of so called “chemical castration” have dominated the headlines, but the review also includes sweeping proposals to reduce the prison population, with recommendations to dramatically cut the use of sentences of less than a year, as well as suggestions for more alternatives to custody—particularly for women, older people, and those experiencing poor mental health.

The government has accepted most of the recommendations, and Mahmood said that the reforms would “ensure that we never again run out of prison places for dangerous offenders.”3

Overcrowding crisis

England and Wales have the highest per capita prison population in western Europe, with a prison population that has doubled over the past 30 years from just over 44 000 in 1993 to nearly 88 000 by the end of 2023.4

The reasons behind this growth are complex. The total number of people sentenced to prison actually fell from 98 044 in 2012 to 67 812 in 2022, suggesting that the growth in the prison population is not due to more convictions. But the average …

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