Demonstrators against antisemitism in London on Sept. 8, 2025. Photo: Campaign Against Antisemitism

An estimated 70,000 people participated in Britain’s March Against Antisemitism in London on Sunday, while new research revealed a surge of antisemitic attitudes among the British population — particularly manifesting among those aged 18-24, 40 percent of whom embraced bigoted views against Jews.

The British charity Campaign Against Antisemitism (CAA) organized the demonstration in partnership with Jewish community groups and featured speeches from Shadow Home Secretary Chris Philp, Deputy Leader of Reform UK Richard Tice, and journalist Jake Wallis Simons. The UK’s Chief Rabbi Ephraim Mirvis and CAA’s chief executive Gideon Falter also spoke.

The march progressed from Broadcasting House (the BBC’s headquarters,) to Parliament Square, where a rally began with Mirvis speaking first.

“These are awful times,” Mirvis said. “We have seen an explosion of hatred right across the UK. Antisemitism is rife right across the UK. You will see it. You will hear it. You will feel it. Britain, wake up now.”

Coinciding with the Sunday march, CAA released research conducted by YouGov which showed that those characterized as embracing “entrenched” antisemitic attitudes in the UK had grown to 21 percent, the highest figure on record, showing a jump from 16 percent in 2024 and 11 percent in 2021.

The poll found that nearly half of Britons (45 percent) said Israel treats Palestinians like the Nazis treated Jews, up from 33 percent last year, and with 60 percent of young adults agreeing.

Researchers also found a cohort of Hamas supporters among British young adults, with 10 percent expressing a favorable view and 14 percent rejecting classifying the perpetrators of the Oct. 7, 2023, invasion of and massacre across southern Israel as terrorists. The number justifying the mass slaughter of 1,200 people and kidnapping of 251 hostages by Hamas reached 19 percent.

A striking 20 percent of young voters said that Israel does not have a right to exist as a Jewish state, while 31 percent disagreed.

A sizable group of young Britons — 42 percent — also embraced the conspiracy theory that Israel “can get away with anything because its supporters control the media.” Among the broader UK population, 26 percent choose to believe this longstanding antisemitic trope.

“Our country is clearly at a tipping point. These are the highest antisemitism figures that we have ever recorded, having doubled in less than five years. The findings in relation to young people are nothing short of terrifying. Our young people are being radicalized into adopting hateful ideologies before our eyes. Britain will lose its soul to extremists unless the silent majority wakes up,” a CAA spokesperson said in response to the research.

“This nation will be safe, and it will be free. I don’t want a single Jewish person to feel like they have to leave,” Tice said during Sunday’s march. “The sad truth is, we shouldn’t need to be here at all. There is no doubt in my mind whatsoever that if those marches had been banned as they had in other countries we would not have seen the increase of antisemitism in this country. We need to stand United. United as proud Britons.”

The survey showed ignorance among respondents, with 54 percent admitting not knowing the meaning of “Zionism,” while 32 percent did claim an understanding of the term as signifying support for Jewish self-determination in the Land of Israel.

Falter said in his speech that “the question now is not whether we will thrive, but will British Jews thrive here.”

Speaking last, Simons, author of the upcoming Never Again: How the West Betrayed the Jews and Itself, said that “we didn’t ask for this, but since Oct. 7, the Jews and our allies have become the conscience of the nation. Betray the Jews and you betray Britain. Betray the Jews and you betray the West. Betray the Jews and you betray yourself. With extremism raising its ugly head above societies it’s the future of the West truly hanging in the balance. Stand up for the Jews. Stand up for the West. And for the love of God stand up for yourself.”

The CAA’s spokesperson stated that “politicians, police and prosecutors, regulators, media organizations, cultural institutions, universities, trade unions – they are all complicit in the creation of a climate of hatred in Britain. Jews may feel it most sharply now, but for all of us, this is not the country that we used to know. Soon it will be too late for our country to change course.”

The YouGov survey included 2,245 adults who provided answers online between Sept. 1-2. The researchers weighted the sample to correspond with a representation of the population in Great Britain.

The survey came after the Community Security Trust (CST), a nonprofit charity that advises Britain’s Jewish community on security matters, published a report last month showing there were 1,521 antisemitic incidents in the UK from January to June of this year. It marks the second-highest total of incidents ever recorded by CST in the first six months of any year, following the first half of 2024 in which 2,019 antisemitic incidents were recorded.

In total last year, CST recorded 3,528 antisemitic incidents for 2024, the country’s second worst year for antisemitism and an 18 percent drop from 2023’s record of 4,296.