Earlier quoted context omitted.
I don't see American presidents making religion "a major part of their platform" either. They get some photo ops in church just like British leaders, and they side with their voters on things like abortion, which breaks down roughly along religious lines without being explicitly so. But a major policy decision directly targeting religion? The closest I can think of in the US is Trump banning immigration from majority…
Maybe its harder to see from the inside... As an example I've pulled up the last state of the union address which appears to be a regular and semi-important thing across the pond. God is mentioned 11 times by my count. That would be considered OOT for a priest over here.
Only in the Churches where the religion part is seen with faint embarrassment. Established Churches are the best way to drive religiosity down yet discovered besides banning.