Obviously there is some disagreement about the historical voting tendencies of the Jewish population, but it is very interesting to see the recent poll with a large majority going to the Tories.
Obviously here in the United States, the Jewish population is overwhelmingly Democratic regardless of income level.
My thought is that it would be that the Jewish population is solidly center-left and resistant to nationalism and social conservatism yet solidly pro-Israel. The Dems fit that bill pretty well, whereas Labour has been less pro-Israel on foreign policy.
Yet, I would think that that would cause Jewish voters to defect to LibDems rather than the Tories - especially today's loony Eurosceptic Tory party.
Also important to keep in mind is that UK Jews are far more likely to be orthodox than American Jews. Given that orthodox enclaves in Brooklyn voted for Trump, it seems possible that Jews in Britain are willing to vote for a nationalist party in their country.