See 'The Lefts Jewish Problem' by David Rich for a thorough account of the history and depth of this issue and for evidence of Corbyn's personal culpability.
Thanks Cofty I've been wanting to ask you for some sources on Corbyn, I would genuinely like to do some research on him.
I had no idea there was an institute for the study of anti-Semitism within Birkbeck.
The first thing that occurs to me is to look for bias and vested interests of course because that's how I studied my history degree. However that's where sources for Corbyn's own words and actions will be useful for me, so thanks.