It's difficult because there is a degree of generational trauma whereby many Jews really are scared by anything they deem might be antisemitism and there are many Jews and, more significantly, parties that want to leverage Jewish fear to shut various things down that they don't like, who will really play up this fear.
It annoys me and I don't agree with it, but I understand why it happens. Personally, I feel very safe in the UK as a Jew. I've been reflecting that for many centuries we were the outgroup in Europe - sure we know people of colour etc did visit and live in Europe more than perhaps assumed, but we were the outsiders for centuries, with no guaranteed right of settlement anywhere, often restricted in where we could live, trades we could practice etc. But these days in most countries we are not the 'main story' for bigots - sadly to the point some Jews will hide under the wings of, for example, Islamophobes, who say they are on Jews' side. But anyone who goes after any outgroup, be that Muslims, people of colour, LGBTQ+ people - ultimately if they go their way they'd be coming for us too.
But in the UK there is no remotely credible political force that could come into power and turn the national and its institution against Jews. I'd be much more worried about that if I were Muslim. I feel no existential risk from the politics of the UK - yes, there is now a heightened risk of Jewish-targetted terror attacks, and I believe we need to target anti terror policing at preventing this. But I certainly wouldn't feel safer in Israel than the UK, even before all this kicked off - something Israeli and American right wing Jews often intimate 'Oh, you are only safe in Israel'.