The U.K. government on Thursday said that the country is facing an antisemitism emergency and pledged to increase security for Jewish communities after aĀ string of arson attacksĀ andĀ a double stabbingĀ that have sparked fear and anger among Jews.
The countryās official threat level from terrorism was raised from substantial to severe after Wednesdayās stabbing attack in London, which police have called an act of terrorism. Severe is the second-highest rung on a five-point scale and means intelligence agencies consider an attack highly likely in the next six months.
Prime Minister Keir StarmerĀ said that his government āwill do everything in our power to stamp this hatred outā after two Jewish men, ages 34 and 76, were seriously injured in a stabbing in Golders Green, an area in north London that is an epicenter of Britainās Jewish community. Both men are in a stable condition.
But some in the community turned their anger on the government, which they say is failing to tackle antisemitism. Starmer was heckled by about 100 protesters holdings signs saying āKeir Starmer, Jew harmerā when he visited Golders Green on Thursday.
The prime minister said in response that āI absolutely understand the high levels of anxiety and concern that there are.ā

āAntisemitism is an old, old hatred. History shows that the roots are deep, and if you turn away, it grows back,ā he said during a televised statement at 10 Downing St. āYet far too many people in this country diminish it.ā
Police have arrested a 45-year-old man on suspicion of attempted murder and labeled the stabbing attack as an act of terrorism. Detectives are working to determine a motive and whether there is any link to Iranian proxies.
The suspect, whose name hasnāt been released, had āa history of serious violence and mental health issues,ā police said. In 2020, he was referred to the governmentās Prevent program, which tries to steer individuals away from extremism. The police force said that his file was closed later the same year, and didnāt disclose the reason for the referral.
Stabbing follows arson attacks
Britainās Jewish community, which numbers about 300,000 people, has faced growing attacks online and in the streets.
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The number of antisemitic incidents reported across the U.K. has soared since the attack by Hamas-led militants on southern Israel on Oct. 7, 2023, and the subsequentĀ war in Gaza, according to the Community Security Trust charity.
In October, an attackerĀ drove his car into peopleĀ gathered outside a Manchester synagogue on Yom Kippur and fatally stabbed one man. Another man died during the attack after beingĀ inadvertently shot by police.
Since the start of the Iran war on Feb. 28, there have been a string of arsonĀ attacks on synagogues and other Jewish sitesĀ in London as well as on opponents of the Iranian government.
Police say that 28 people have been arrested over those attacks, which did not cause any injuries. A handful have been charged and one teenager has been convicted after pleading guilty.
Police investigate potential link to Iran proxies
Several arson attacks have been claimed online in the name of Harakat Ashab al-Yamin al-Islamia. Israelās government has described the group, whose name means the Islamic Movement of the Companions of the Right, as a recently founded group with suspected links to āan Iranian proxyā that hasĀ also claimed responsibility for synagogue attacksĀ in Belgium and the Netherlands.
An online post under the same name also claimed responsibility for Wednesdayās stabbing. Home Secretary Shabana Mahmood said that authorities were investigating whether that claim is credible or āopportunistic.ā
Security experts have warned that the name may be a flag of convenience rather than a coherent group, and its claims should be treated with caution.
The U.K. has accused Iran of using criminal proxies to conduct attacks on European soil targeting IranianĀ opposition media outletsĀ and the Jewish community. Britainās MI5 domestic intelligence service says that more than 20 āpotentially lethalā Iran-backed plots were disrupted in the year ending in October.
The government said the increased threat level was not solely a result of the Golders Green attack, but also due to increased danger āfrom Islamist and extreme right-wing terrorist threat from individuals and small groups based in the U.K.ā
The threat level stood at severe for much of the time between 2014 and February 2022, when it was lowered to substantial.
Government under pressure to tackle antisemitism
Starmer pledged that the attacks would bring a āswift and visibleā criminal justice response. Mahmood said that sheās treating antisemitism as āan emergency,ā describing it as the top security issue she faced.
The government announced 25 million pounds ($34 million) for more police patrols and protection around synagogues, schools and community centers, and Starmer said that the courts would speed up sentencing on antisemitic attacks as a deterrent.
But some Jews and others say the government has allowed an atmosphere of antisemitism to grow. They say pro-Palestinian protests, held regularly since October 2023, have gone beyond criticism of Israelās actions to foster an atmosphere of intimidation and hatred against Jews.
The protests have been overwhelmingly peaceful, but some say chants such as āFrom the river to the sea, Palestine will be freeā incite anti-Jewish hatred. Some protesters have been arrested for displaying support for Hamas, a banned organization in the U.K.
Jonathan Hall, the governmentās former reviewer of terrorism legislation, called for pro-Palestinian marches to be temporarily banned, saying they had helped āincubateā antisemitism.
The leader of the opposition Conservative Party, Kemi Badenoch, backed calls for a ban, saying the marches āare used as a cover for violence and intimidation against Jews.ā
The government hasnāt backed a ban, but Starmer said that protesters who used the phrase āglobalize the intifadaā ā seen by some as a call for attacks on Jews ā should be prosecuted.
Starmer said that the government would fast-track powers āto tackle the malign threat posed by states like Iran ā because we know for a fact that they want to harm British Jews.ā