Law Society of WA

Less jail, better justice? Lessons from the UK’s new sentencing Act

April 14, 2026

By Isobel Millward

The United Kingdom parliament has recently passed The Sentencing Act 2026, which introduces significant changes to sentencing practices, particularly in relation to short-term imprisonment. Most notably, the Act provides that sentences of less than 12 months will generally not be served in prison, but instead as suspended sentences.

A suspended sentence does not involve imprisonment, but it still constitutes a conviction and results in a criminal record. Typically, individuals placed on a suspended sentence are subject to a period of probation lasting between one and two years, during which they must comply with certain conditions.

These conditions can vary widely depending on the nature and severity of the offence, ranging from restrictive measures (such as curfews or bans on computer use) to simply maintaining good behaviour.

These reforms arise largely in response to ongoing prison capacity concerns in the UK, as well as research demonstrating the limited effectiveness of short prison sentences. Prior to the reforms, the prison system was described as “bursting at the seams,” with thousands of individuals held in overcrowded conditions.

The situation in Australia

Australia is not immune from the issues observed in the UK. Concerns about prison overcrowding, recidivism, and the limited utility of short sentences are equally relevant in the Australian context.

Western Australia already has provisions in place to restrict the use of short-term imprisonment. Under Section 35 of The Sentencing Act 1995, courts are required to provide written reasons when imposing a sentence of less than 12 months, explaining why no lesser sentencing option was appropriate.

Additionally, courts generally cannot impose sentences of less than six months unless certain conditions are met, such as where the sentence forms part of a longer total term, the offender is already serving another sentence, or the sentence is imposed for an aggravated prison offence.

Despite these measures, significant issues remain. A sentence of six months is arguably of limited practical value. Short periods of imprisonment often fail to address the underlying causes of offending and may, in fact, contribute to further criminal behaviour.

Empirical research supports this idea. A recent study conducted in Queensland found that shorter sentences are associated with a higher risk of recidivism. This may reflect the fact that individuals serving short sentences often receive limited rehabilitative support both during incarceration and upon release.

Further, prisons can function as environments where individuals are exposed to more entrenched criminal influences, effectively acting as a meeting ground for those within the justice system. This is particularly concerning for young offenders. Contact with other offenders can foster a sense of community within the prison environment, making reintegration into society more difficult, especially where individuals already come from unstable or adverse backgrounds. Thus, once young people engage with the prison system, they may become trapped in a cycle of reoffending.

There is also a significant economic dimension to consider. Incarceration is costly, with recent estimates placing the cost at approximately $436 per prisoner per day, or over $159,000 per year. Reducing reliance on short-term imprisonment could therefore generate substantial savings, which could be reinvested into more effective interventions such as probation services and restorative justice initiatives.

Conclusion

The recent reforms in the UK were motivated in part by the practical issue of prison overcrowding, but they underscore a broader and more important point about short term prison sentences. While overcrowding is a relevant consideration in driving reform, an overemphasis on this issue risks distracting from a deeper examination of the underlying structural causes of the challenges within the criminal justice system.

Moving away from short-term imprisonment and toward community-based preventative and rehabilitative approaches for less serious offences has the potential not only to reduce recidivism, but also to create a more efficient and effective justice system overall.

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