Change UK will today formally adopt the International Holocaust Remembrance Alliance (IHRA) definition of antisemitism in full.
The full IHRA definition and all 11 examples accompanying it were approved internally by MPs over the last few days.
The decision will be formally announced in a private meeting in Parliament attended by the Board of Deputies of British Jews.
The newly-formed party led by Anna Soubry will announce this afternoon that the definition will be used across its operations, policy and practices.
Soubry said: “Change UK and all our MPs stand in absolute opposition to antisemitism in our values, our policies, and our practices.
“The resurgence in recent years of antisemitism within certain sections of British politics makes it incumbent on politicians of all persuasions to be unequivocal and uncompromising in our opposition to it.
“It is toward that end that without a moment’s hesitation, Change UK today proudly commits to adopting the IHRA definition of antisemitism in full, with all its examples.”
Marie van der Zyl, president of the Board of Deputies of British Jews, said the organisation “welcomes” the move.
“With antisemitism in the UK at record levels, it is incumbent on political parties to show that they take it seriously,” she said.
“Adopting the IHRA Definition of Antisemitism is a crucial step in that, and we welcome the fact that Change UK have adopted the Definition in full.”