University of St Andrews - ethnic minority student?

As per the title, I applied to the University of St Andrews (Arts and Humanities). But I am Chinese, and am worried that St Andrews would be populated by classist / racist upper class people. Has anyone had any unpleasant experience as a student with an ethnic minority background like Asian, East Asian, Black etc? I really want to go there but this concern strikes me, and I know that other universities like Edinburgh, UCL are much diverse but would still want to consider St Andrews.
Thanks for reading and please do not hesitate to share stories!