Doubts were cast over the sincerity of Labour’s vow to tackle antisemitism last night after it emerged that only one of 75 complaints from a leading campaign group has resulted in an expulsion from the party.

Labour Against Antisemitism (Laas) expressed concern after the party said that it had decided not to suspend or expel 37 activists reported by Laas this year. A single Labour member reported by Laas has been expelled and two have been suspended, the group said.

Of the other complaints, the party could not identify all those activists reported by Laas as present members and said that some had been dealt with historically.

One activist who shared posts online calling Israeli soldiers “ZioNazis” was given a warning but faced no further