Bit of a copypasta, but:
There have been 1106 complaints to the NEC about anti-Semitism. 433 did not involve Labour members. Of the 673 who were:

96 members were immediately suspended.

146 received a reminder of conduct.

220 cases did not have sufficient evidence of a breach of party rules to proceed with an investigation.

211 were issued with a Notice of Investigation.
Of the cases who were issued with a Notice of Investigation or suspension, there have been 96 NEC antisemitism disputes panel decisions.

42 members referred to national constitutional committee (NCC).

16 members issued with a formal NEC warning.
The following 18 NCC decisions have been made:

12 members were expelled.

6 received sanctions.

24 cases currently with the NCC, Labour’s top disciplinary body, are outstanding.
This doesn't sound like a party failing to act over anti-Semitism to me. It sounds like a party determined to get to grips with the problem and to root out the anti-semites in their midst.
Now where are the equivalent figures for the Tory Party?