Some interesting stats in that CAA report, though they weren't the ones highlighted by that organ of fair reporting, The Sun (that article, by the way, is 18 months old). Though the Labour Party scored highest of all political parties perceived by British Jews to be 'harbouring antisemites', the number of respondents believing the Conservative Party to be 'too tolerant of antisemitism' increased by almost 60% in a year. The perception of UKIP was high at 41%, but the Greens are next on 40% followed by the Liberal Democrats on 36% and the SNP on 32%. The YouGov results actually show that, while the Labour Party is perceived as being inept in dealing with antisemitism, 'Labour Party supporters are less likely to be antisemitic than other voters'.
Full report here:
https://antisemitism.uk/wp-content/uploads/2017/08/Antisemitism-Barometer-2017.pdf