National security offences, including espionage and foreign interference, carry serious risks to public safety and the integrity of UK institutions. Sentencing frameworks are used to ensure that individuals who commit such offences are managed in a way that reflects the level of risk they pose.
The Ministry of Justice and Home Office have introduced new rules requiring offenders convicted of national security offences to serve longer prison terms and face stricter release conditions.
The Ministry of Justice and Home Office confirmed that automatic early release has been removed, with Parole Board assessment required after at least two thirds of a sentence. The changes apply to offences including espionage and foreign interference, with extended monitoring conditions following release.
New sentencing rules for national security offences
The legislation removes automatic early release for offenders convicted of national security crimes. Individuals must now serve a greater proportion of their custodial sentence before being considered for release.
The reforms align sentencing for these offences more closely with approaches used for terrorism-related crimes. This reflects the level of risk associated with such offences.
Changes to release and supervision conditions
Offenders will only be considered for release after serving at least two thirds of their sentence. Release decisions will be subject to assessment by the Parole Board.
Once released, individuals will face strict supervision measures until the end of their sentence and for an additional period. Monitoring conditions may include electronic tagging and other controls.
- Parole Board assessment required
- Minimum two thirds sentence served
- Extended post-release supervision
- Use of electronic monitoring measures
Release and supervision framework
| Release point | After serving at least two thirds of sentence |
| Decision authority | Parole Board assessment required |
| Post-release conditions | Strict supervision including monitoring measures |
Types of offences affected by the reforms
The updated rules apply to offences that pose a threat to national security. These include activities carried out on behalf of foreign states or organisations seeking to compromise UK interests.
The reforms cover a range of conduct linked to interference, sabotage and intelligence gathering. The aim is to ensure consistent handling of high-risk cases.
- Espionage activities
- Foreign interference operations
- Sabotage of infrastructure
- Other national security offences
Offence categories covered
| Espionage | Gathering or sharing sensitive information for foreign powers |
| Sabotage | Actions intended to damage infrastructure or systems |
| Foreign interference | Activities aimed at influencing UK institutions or processes |
Government rationale for strengthening sentencing
The government stated that the changes are designed to improve public protection and address evolving threats. The reforms are intended to act as a deterrent to individuals acting on behalf of foreign powers.
They also reflect increased use of indirect tactics, including the use of proxies and cyber activity targeting UK infrastructure. The measures aim to ensure appropriate consequences for such offences.
Context within the Sentencing Act 2026
The changes form part of wider sentencing reforms introduced through the Sentencing Act 2026. The Act includes provisions to manage different categories of offenders based on risk.
It also supports broader changes to how custodial sentences and community measures are applied. The national security provisions focus on ensuring that higher-risk offenders are managed under stricter conditions.
Wider criminal justice measures linked to the reforms
The government has also announced additional measures to strengthen monitoring and supervision across the justice system. This includes expanded use of tagging and monitoring technologies.
These actions aim to improve oversight of offenders both in custody and following release. They form part of a broader approach to managing risk and protecting the public.
Ministerial Comments
David Lammy, Deputy Prime Minister said;
“Keeping the British people safe is our number one priority as a Government. Those conspiring against this country should see this new measure as a clear warning. Public protection will always come first, and threatening activity by foreign powers will always be punished.”
Jake Richards, Minister for Sentencing, Youth Justice and International said;
“This new measure, part of the historic Sentencing Act, cracks down on the most dangerous offenders to keep them behind bars for longer. We will do whatever it takes to keep our country and people safe.”
Dan Jarvis, Security Minister said;
“States are deploying new hostile tactics on our streets, using proxies to do their work and targeting our national infrastructure with cyber attacks. Our police and security services have strong powers to defend these threats, but those responsible must face tougher consequences.”
Wrapping Up
The new sentencing rules require offenders convicted of national security crimes to serve longer prison terms and face stricter release conditions. The reforms introduce Parole Board oversight and extended supervision to manage risk after release.
As part of the Sentencing Act 2026, the measures support a broader framework aimed at strengthening public protection and addressing threats linked to foreign interference.
Sources: Ministry of Justice, Home Office, Jake Richards MP, The Rt Hon David Lammy MP, Dan Jarvis MBE MP, Brett Wilson, and the Prison Reform Trust.
Prepared by Ivan Alexander Golden, Founder of THX News, an independent news organisation delivering timely insights from global official sources. Combines AI-analysed research with human-edited accuracy and context.
