In Scotland I knew two Polish families, and in 1970 a local shop was run by an Asian family.
However, when my children were growing up nearly fifty years ago we knew quite a few people who had one or both parents born outside the UK. On the first street we lived in there were Indian Sikhs, West Africans and Jamaicans.
We moved to a mining village. I don't recall anyone there who wasn't white British. Moved again to a more expensive area, some Indian and Pakistani residents, and our neighbour over the back was African with an English wife. They mainly worked at the hospital, although one was a millionaire market trader, and one owned an Asian restaurant. My daughter and his daughter went to school together and are still friends.
Unfortunately the numbers got too large, the EU open borders policy being mainly to blame. IMO.