Gideon Falter, Chief Executive of Campaign Against Antisemitism, said: “Once again, Jews around the world end a holy day only to discover that yet again, while we in Britain prayed, there has been an attempt to slaughter Jews for their Judaism, this time in Halle, Germany by a terrorist of the extreme right who has murdered two innocents.

“All over the world, far-right, far-left and Islamist fanatics are stoking the flames of Jew-hatred with too little being done to stop them. In Britain Jews are already accustomed to worshipping in fortified synagogues surrounded by blast walls and security guards. Those who enable or fail to act against this resurgent hatred are complicit in the rising toll from antisemitic terrorist attacks around the world.

“We mourn with the Jewish community and people of Halle. Today as Yom Kippur ends, we are brutally reminded why all decent human beings must all stand #TogetherAgainstAntisemitism, not just in word but in deed.”