A report on the Jewish diaspora found a sharp rise in anti-Semitism in the UK

She said: “Social media has been used as a place for radicalization by various groups and individuals over the past few years, including those who later resort to violence at synagogues or schools – and now AI is part of it.”

Lord Mann, the UK government’s independent adviser on anti-Semitism, called for a “clear, calm and methodical” approach to tackling anti-Semitism and warned that governments shirking their responsibilities were contributing to the problem.

Angela Rayner, the housing, communities and local government secretary, told the BBC she was “appalled by the appalling anti-Semitism that is happening in the UK”. “It’s unbearable,” she said.

“We are working with international partners, including the J7, to strengthen the fight against international anti-Semitism across government and support Jewish communities,” she added.

The Government recently announced £251m. Funding to help police forces protect Jewish communities across England.

The Council of British Jews told the BBC it is urging the government to take steps to strengthen Jewish community safety, tackle anti-Semitism in schools, universities and public life and hold social media companies accountable for spreading anti-Semitic hatred.

Phil Rosenberg, the board’s president, told BBC Radio 4’s Today program that the rise in anti-Semitism was “a sign of something dangerous that affects everyone, not just Jewish people”.

He spoke of the “open sewer line” of stifling debate and the actions of hostile foreign countries, which he believes has worsened in recent times.

Barry Frankfurt, chairman of the North London Synagogue, told the BBC he had seen anti-Semitism change in his life – people shouting at him through car windows and swastikas plastered on tombstones was “horrific”.

“This is now someone getting shot in a synagogue, someone getting stabbed outside a kosher shop, a synagogue burning down,” he told the BBC.

An independent review into anti-Semitism in schools and colleges in England is due to report to the government this autumn.

In a joint statement by the J7 Large Communities Task Force Against Antisemitism: “Anti-Semitism in our seven countries is no longer an escalation; it is our new normal.”

“Governments need to stop reacting after Jews are attacked and start acting before, with real security money, tough laws and social media platforms that enforce their own laws.”