Without seeing the reasons given for expulsion that does seem tough for someone who was just being a bit controversial. When will the appeal be heard?Here is yet another Jewish voice on the subject
There are many more. Nothing to do with membership of proscribed groups.
How many individual expulsions have there been other than for membership of proscribed groups?
I note that the Jewish Labour Movement supports the proscription of the four groups:
Nothing is straightforward in the Labour Party, when even the Jewish supporters are split.