More than 150 people who had been reported to the Government's anti-extremism programme Prevent went on to attempt or commit serious crimes, according to a published report, and dozens of those cases involved terrorism offences.
The finding centres on what happened to individuals after they came to the attention of Prevent. The figure covers both attempted and completed serious offences, which means it includes cases where a crime was planned or started as well as those that were carried through to the end.
Of the cases identified, dozens were linked to terrorism offences. The material available does not give a precise count for those terrorism-related cases beyond that description. It also does not establish whether the original reporting to Prevent was directly connected to the crimes that followed, so the report's figures describe outcomes rather than proven causation.
Prevent sits at the centre of the UK's approach to countering extremism. It is designed to identify people considered vulnerable to radicalisation and to steer them away from it before they offend. Its effectiveness has long been a subject of public and political debate, and a figure of this scale puts a number on the individuals who went on to offend after being referred to the scheme, sharpening that argument.
The report's time period, its authorship and its methodology are not confirmed in the material available. Without those details, it is not possible to assess how the cases were selected, how the outcomes were recorded, or how the offences were classified. Readers should weigh the headline figures with that limitation in mind, since the scale of the caseload and the category of offence can each shape how the numbers are interpreted.
What remains unclear is how the government or the programme's administrators have responded to the findings, and whether any changes to referral, assessment or monitoring processes are under consideration. The material available does not record any official reaction, and no further statements or corrective measures are confirmed at this stage.