Sainsbury's removing the kosher products was ridiculous and ignorant, but hopefully it was an isolated incident at one store that won't happen again after the publicity it has received. I agree that it appears that diversity training is sadly lacking.
QnBoudi I can't read your Ha'aretz link as it's behind a paywall. Sometimes I can get the links to work if I access them via Twitter.
I listened to some of Vanessa's show but it is extremely long so I will have to try and listen to the rest tomorrow. She had quite a range of people phoning in representing a range of opinions. Many callers noted that there are a wide range of opinions within the Jewish community (one of the callers was from Jews for Justice for Palestinians; another was a British-born Israeli who described himself as a centrist and argued the pro-Israel case). Mira Bar-Hillel is of the opinion that anti-Semitism in the UK has been inflated to deflect attention from Gaza.
Another caller said he condemned anti-Semitism but described himself as anti-Zionist. However, I think there is some confusion about this term - I am quite confused myself as there seem to be many different types of Zionism. I would support either a two-state or one-state solution in Israel and Palestine but I'm not sure if the latter counts as Zionism. Assuming that Zionism refers the belief that there should be a Jewish homeland, then it is possible to be a Zionist and yet also oppose many of Israel's policies and actions.