A charity that monitors antisemitism and provides security for British Jewish groups has recorded a “horrific surge” in racist attacks in the past month which campaigners said “surpassed anything we have seen before”.

The Community Security Trust (CST) recorded 351 antisemitic incidents between 8 and 31 May, more than for any single month since records beganin 1986.

The CST said the rise was fuelled by antisemitic reactions to the escalation of violence in Israel and Gaza. It called the situation “utterly predictable and completely disgraceful”.

The previous highest number of antisemitic incidents, 314, was recorded in July 2014, which also coincided with an escalation in violence in the Middle East.