If you knew what you were talking about, you'd know there are, or were, many many Jewish cabbies in London. They virtually created the trade. I was a beneficiary, and I've always felt grateful to them.
I also worked for a Jewish high end antiquarian book dealer in Mayfair for 7 years. A great guy, full of humour. Dealt with millionaires and billionaires. What's best about Jewish humour is the ability to laugh at themselves IMHO. But Israel's another matter altogether. I was also a postie in Golders Green, and saw both ends of the spectrum. The rich and famous and the orthodox poor. Was asked on more than one occasion to turn a light off on the Sabbath. Respect, you have to have it. Good for the soul.