I guess it all boils down to what one calls "Christianity". If I remember my CoE correctly, the Queen is intermediate between the people and God, so loyalty to the Queen isn't, strictly speaking, in direct conflict with loyalty to God.

Loyalty to mates is, I believe, a high point in all variants of Christian faiths, but I could be wrong. It's been a good while since I had the reference cards out for a good bit of christianspotting (like bird-spotting, only with christians instead of avians).

Also, "hi, long time, no see".