Two men who supported the Islamic State group have been sentenced to life imprisonment after being convicted of preparing terrorist acts targeting Jewish communities in the United Kingdom.

A court heard that the pair had pledged allegiance to the extremist organisation and had drawn up detailed plans to carry out an attack against Jewish sites, including places of worship.

During the trial, prosecutors set out evidence that the men had conducted reconnaissance, acquired weapons and discussed the timing and potential impact of an assault intended to cause mass casualties and sow fear.

Digital material recovered by investigators showed expressions of support for ISIS ideology and instructions relating to attack methods.

Authorities said the plot was disrupted before it could be executed, preventing what could have been a devastating act of violence.

The judge described the conspiracy as motivated by extremist hatred and said the defendants posed a significant and continuing danger to the public.

Both were given life sentences, with minimum terms to be served before they can be considered for parole.

Security services and police said the case underscores the persistent threat from individuals inspired by jihadist groups, even as the territorial control once held by ISIS has long since collapsed.

Jewish community leaders welcomed the verdicts, saying the swift intervention by law enforcement had protected lives and demonstrated the importance of vigilance against antisemitic extremism.

Officials reiterated that counterterrorism operations remain a priority, particularly in protecting vulnerable communities and preventing radicalised individuals from carrying out attacks.