Look, I don't really wanna get bogged down in Tory-Labour, Republican-Democrat, "is being opposed to certain issues and members of the Irsaeli government anti-Semitic" conversation. I really don't. But as a US citizen who follows US news closely and world news incidentally, I'm aware this is an entire topic of discussion. I expected it to be a section of Corbyn's page- and it was- but there's a whole Wikipedia article about it, so you can judge for yourself.

https://en.wikipedia.org/wiki/Antisemitism_in_the_UK_Labour_...

My personal read is, it ain't much different from some stuff in US politics. A bit of horseshoe theory stuff, not that I buy into that at large. But on the right you have politicians making alliances with neo-Nazis, on the left you have fervently pro-Palestine politicians. Both sides are or can be partially motivated by xenophobia, neither side is immune to having a theoretically defensible view possibly motivated by actual prejudice. I myself have been called an anti-Semite over disagreements that I believe to have little to do with religion and much to do with the actions of government agents. So it goes.

Supposedly Jeremy Corbin said something overly critical of its foreign policy, but I've yet to hear a direct quote I wouldn't myself say in public.

Looks like they recently made up: "UK Labour Party is pro-Israel again, says chair of its visiting friendship group"

"After antisemitism drove Jews away in Corbyn era, MP Steve McCabe says opposition party has returned to traditional Israel-backing stance, but is concerned about the new coalition"

https://www.timesofisrael.com/uk-labour-party-is-pro-israel-...

Proposed leftist economic policy.

St Jeremy led an institutionally anti-semitic Labour Party, clearly documented by the EHRC. Reading that will answer your question.