Zionist Union MK Ayelet Nachmias-Verbin blasted British Labour Party leader Jeremy Corbyn in an interview with London radio station LBC on Tuesday.
Nachmias-Verbin said the Labour Party leadership was "failing to fight anti-Semitism from within."
When asked whether she believed Corbyn was an anti-Semitic, she replied that "unfortunately and sadly" she did.
"He is really not concerned with being balanced when it comes to Israel-Palestine issues. Maybe he is anti-racist, but he is an anti-Semite," Nachmias-Verbin said.
Nachmias-Verbin made the remarks in Liverpool, where she is attending the Labour Party's annual conference.
Israel's Zionist Union faction is comprised of both the Hatnuah and Labor parties. Nachmias-Verbin is a member of the Labor party.
She said, "The wonderful Jewish British community, who really want to stand strongly with two identities, do feel unsafe" when it comes to the possibility Corbyn could become Britain's prime minister.
Israel's Labor party suspended ties with Corbyn in April, accusing the U.K. party leader of crossing "a dangerous line" between legitimate criticism of Israeli policy and anti-Semitism.
Nachmias-Verbin said she made the decision to attend the event in an effort to "strengthen" ties with Labour Party politicians and supporters.
At the conference, Labour Party delegates passed a motion strongly criticizing Israel, as a senior lawmaker warned the party must root out anti-Semitism.
Delegates at the party's conference voted Tuesday to criticize Israel's use of force against Gaza protests, urge more U.K. funding for UNRWA, the U.N. aid agency for Palestinian refugees, and back an embargo on British arms sales to Israel.
The vote came after a heated debate that saw Palestinian flags waved in the convention hall.
Labour has been riven by an anti-Semitism controversy under party leader Jeremy Corbyn.
Recent reports have shown him laying a wreath at a memorial to the Black September terrorists who murdered 11 Israeli athletes at the 1972 Munich Olympics, attending the wedding of a known Holocaust denier, and saying British Zionists don't understand irony.
In late July, three Jewish newspapers in the U.K. ran a joint editorial calling Corbyn "an existential threat to Jewish life in this country." The editorial, which ran in The Jewish Chronicle, Jewish News and Jewish Telegraph, said that since Corbyn's election as Labour leader in 2015, the party had grown increasingly tolerant of anti-Semitism.
Foreign affairs spokeswoman Emily Thornberry said Labour must kick out "sickening individuals … who use our legitimate support for Palestine as a cloak and a cover for their despicable hatred of Jewish people."
