Clearly there is some individual prejudice against Jews, as evinced by some snarky comments by the administration at Cambridge about "Semites". It is, however, hard to determine how much of this is actual antisemitism and how much is classism. In Britain at the time, especially with the older generation, class distinctions were very important. This slightly dismissive attitude toward Harold may have had less to do with racism than disapproval of his father having made his money in trade, and for trying to rise above middle class. Obviously, whether this attitude is based on race, religion, or class, it's wrong, but let's examine this whole situation from another angle.
Harold also finds ready acceptance among his fellow students at Cambridge. In the years following the Great War, the upcoming generation regarded with cynicism- and scepticism- a lot of what the older generations held as being important, and discarded quite a bit of it. Even if some members of the school's administration look askance at Harold, he fits in easily among his peers. So, does Harold's Jewish heritage make him an outsider? Probably with some individuals, but he often seems hyper-sensitive, seeing offence where none is intended, or perhaps intended for a completely different reason. To some extent, if he's an outsider, it's because he sees himself as one and holds himself apart.
In my next post, I'll tackle the character of Eric Liddell and discuss some of the issues and ideas that Chariots Of Fire raises.