Police Admit Missed Warning Signs as Probe Reveals Wider UK Terror Plot

A British counterterrorism investigation into last year’s deadly attack on a synagogue in Manchester has uncovered evidence of a separate planned attack on the United Kingdom’s Defence Academy, revealing what prosecutors describe as a broader extremist plot targeting both Jewish civilians and military personnel. The developments emerged as a court sentenced one of the conspirators to life imprisonment.

At Manchester Crown Court on Thursday, Mohammad Bashir, 31, was sentenced to life in prison after pleading guilty to preparing an act of terrorism. The court ordered that he serve a minimum of 17 years before becoming eligible for parole. Prosecutors described Bashir as a “determined jihadist” whose plans could have caused devastating loss of life.

The case is linked to the October 2025 terrorist attack at the Heaton Park Hebrew Congregation Synagogue in Manchester during the Jewish holy day of Yom Kippur. Bashir’s associate, Jihad Al-Shamie, carried out that attack by driving a vehicle into worshippers before launching a knife assault. The attack killed one worshipper, while another person died after being struck by police gunfire during the emergency response. Al-Shamie was fatally shot by officers at the scene.

Although Bashir did not participate in the synagogue attack itself, investigators discovered encrypted messages, reconnaissance material and planning documents showing that he and Al-Shamie had jointly prepared a separate assault on the UK Defence Academy at Shrivenham in Oxfordshire, a major training centre for British military personnel. According to prosecutors, the pair believed the academy was involved in training members of the Israeli military, making it a target in their extremist ideology.

Court proceedings revealed that the suspects had visited the academy to conduct surveillance and discussed carrying out an attack using knives and a fake suicide vest to maximize panic and casualties. Investigators said the planned assault had advanced beyond online discussions into operational planning before it was disrupted.

The investigation also exposed significant failings by Greater Manchester Police before the synagogue attack. Chief Constable Sir Stephen Watson publicly apologized after it emerged that officers failed to examine mobile phones seized from Al-Shamie during earlier arrests. Authorities acknowledged that the devices contained extremist material and communications that might have revealed the developing terror plot had they been reviewed in time. The police chief described the oversight as a “missed opportunity,” and Britain’s Independent Office for Police Conduct is now examining the handling of the case.

Prosecutors said digital evidence recovered from the previously unexamined devices proved crucial in securing Bashir’s conviction. The material included messages expressing support for the so-called Islamic State group, discussions about potential targets and evidence of reconnaissance trips linked to the Defence Academy.

The sentencing comes as UK security agencies remain on heightened alert over the threat posed by violent extremism. Counterterrorism officials say the case illustrates how investigations into one attack can uncover wider networks and additional planned acts of violence. They also stressed the importance of improving intelligence analysis procedures to ensure that critical evidence is identified before attacks can be carried out.