I just reread this and saw how you met your first Jewish person at Uni. This really puts things in perspective for me.
When I was in Elementary, Middle and High School I had friends, from Grade 1, who were Jewish, Italian, Irish, German, Norwegian, Swedish, Indian, Japanese, Cuban, Guatemalan, and from various African countries. We lived in the country. Cities are even more diverse. This was and is the norm.
In the neighbourhood my husband and I live in now we have 2 families from Greece, 2 from mainland China, 1 from Taiwan, Lithuania, 2 Jewish families, one couple with English and Norwegian background, 3 with Irish background, 2 from India, and ourselves. We did have a lovely black family but sadly they ended up divorcing and both left the town, though he occasionally comes back to visit with everyone and seems lonely. I'm French Canadian, Scandinavian and Iroquois, my husband is Irish and English. We are all one happy family. This is why I found it strange that she never had friends of other ethnic groups or people of colour, or indigenous friends. I can't even imagine it that way. Interesting. Thank you all for enlightening me on the situation in the UK.