Roger Waters rants like this at many of his concerts.
Other notables with shocking anti-Israel rants include Alan Rickman (Professor Snape in Harry Potter), Emma Thompson, and Vanessa Redgrave.
All of them were/are devout members of the Labour Party.
And in case anyone did not notice, Jeremy Corbyn, the soundly defeated Labour Party leader in 2020, was vehemently anti-Israel and openly praised Palestinian terrorists.
Jews and Israelis, (not the same thing although there is a great deal of cross over) are a totally different ball game. They are educated, mannered, civilized and can kick ass on their own. In fact the British feel slightly inferior to them. And they do not need the guidance of the British to exploit their natural resources.