Are Raids Only At Sponsored Stops?

I live in the UK, with no sponsored stops so does anyone know if I could battle a raid? It just says that there are no raids nearby.

As far as I could tell, they can be at any stop as I saw them at several churches on the way home from work tonight

Thanks, it’s just that most I saw were only at Starbucks gyms.

The first few I saw today were only at Starbucks and Sprint, but as they lowered the access level, they opened more up it seems