Review finds significant shortcomings in government's Prevent programme handling of killer

An independent Prevent learning review, published in 2025, found significant shortcomings in the handling of Ali Harbi Ali by the government's counter-terrorism Prevent programme following the murder of Sir David Amess in 2021. The review concluded that the assessment of Ali's vulnerabilities was problematic, resulting in questionable decision making and sub-optimal handling of his case. Ali Harbi Ali, who was referred by his school in 2014, was exited from the Channel programme in 2015 and his Prevent case was closed in 2016.

The findings indicate operational shortcomings within the Prevent programme. The review identified that the case was closed without addressing the issues identified during Ali Harbi Ali's involvement with Prevent and Channel. These findings expose significant operational and regulatory issues for the government and the Home Office.