Plunging the party into a fresh row over anti-Semitism, Jewish Voice for Labour’s Jonathan Rosenhead told a packed room of supporters that reports of anti-Jew hate in Labour, and its definition had been “distorted”.

And he claimed that there was less of a problem with anti Semitism in Labour than the rest of the country.

He said that Labour’s ruling body was “rolled over” in the face of a “political assault of lies and half truths” to accept the IHRA’s definition of Jew hate. And Labour’s NEC would “live to regret” adopting it.