I think you're right, it comes down to numbers. In the south of England, I'm not aware of much anti-Catholicism, and in fifty years I've had very few knowing contacts with Catholics at all. My best friend at Junior school was Scottish, and told me I should support Celtic, so looking back I guess he was probably Catholic, though that never came up. I believe one of my grandmothers was originally Catholic, but left the church because she married a divorced man; the only reason I know this is that my mother remembers her mother having arguments with the local priest. I've been to the local Catholic church here twice, for the baptism of the children of a friend of the family. On the other hand, both my parents taught at Catholic schools at different times, and my sister currently works at one.