Spies operating for hostile states, including Iran, will face significantly longer prison sentences under newly toughened sentencing laws introduced by the UK government. From this Sunday, foreign agents found guilty of crimes against national security will no longer be automatically released early, marking a decisive shift in how such offences are punished.
Stricter Parole and Extended Monitoring
Under the revised regulations, individuals convicted of offences such as espionage, sabotage, or foreign interference will not be eligible for automatic release before completing their full sentence. Instead, they must serve at least two-thirds of their term behind bars, after which the Parole Board will conduct a thorough risk assessment before considering any release.
Once released, these individuals will be subject to rigorous supervision and some of the toughest monitoring conditions available. This includes electronic tagging, and the supervision will extend until the end of their original sentence plus an additional year, ensuring continuous oversight.
Government Commitment to Public Safety
Justice Secretary David Lammy emphasised the government's unwavering priority: "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."
Security Minister Dan Jarvis highlighted the evolving nature of threats, stating: "States are deploying new hostile tactics on our streets, using proxies to do their dirty work and targeting our national infrastructure with cyber attacks. Our police and security services have strong powers to defend and defeat these threats, but those responsible must face tougher consequences. That is why we are introducing new laws so anyone compromising our national security for a foreign state will face longer behind bars."
MI5 Chief Warns of Unprecedented Threats
The introduction of these tougher sentencing laws follows stark warnings from MI5 chief Sir Ken McCallum, who in October last year declared that Britain is in a "new era" of threats. He cited a 35 per cent increase in hostile state threat activity targeting the UK, with new plots and threats being detected "every day".
Sir Ken stressed the need for enhanced defences: "In this new era, with multiple overlapping threats on an unprecedented scale, we need to up our game. We can't rely solely on investigating and disruption. Together, we have to ensure that the UK is a hard target. We want our adversaries to think twice before acting against us."
Escalating State Aggression on UK Soil
Detailing the severity of the situation, Sir Ken warned: "In 2025, MI5 is contending with more volume and more variety of threat, from terrorists and state actors than I've ever seen." He spoke of "rising aggression on UK soil", noting: "State threats are escalating. In the last year, we've seen a 35 per cent increase in the number of individuals we're investigating for involvement in state threat activity."
This includes espionage against critical institutions such as Parliament, universities, and national infrastructure. Sir Ken added: "But now, states are also consistently descending into ugly methods MI5 is more used to seeing in our terrorism casework. My teams are routinely uncovering attempts by state actors to commission surveillance, sabotage, arson, or physical violence, right here in the UK. We are dealing with these threats every day."
In a particularly alarming revelation, MI5 has tracked more than 20 potentially lethal plots backed by Iran in the last year alone, underscoring the urgent need for these strengthened legal measures to protect national security and deter future hostile actions.
