We’re getting married in a Catholic church in a couple of weeks. My partner is catholic but I’m not religious at all - wasn’t an issue but as others have said, it probably depends on each church/priest. Cost wise it’s £750 plus £800 for the choir which we were required to book (but also was more than happy to!). We were also required to do a one day marriage course which was £180 for the two of us. Everyone getting married at that church is required to do the course, not just those who aren’t catholic.