I did not do this at the beginning as it was not presented as a religious group by the leaders, nor by the other mums / kids (who incidentally were mostly from a completely different ethnic group and non-christian which added to my lack of questioning it to be a christian group). I googled it after and found out it a few things from the website.
I stayed a couple of minutes at the beginning. There was a few minutes where I filled out a form, saw the DBS, met the other mums (from school), met the group leaders, had a quick chat about what they do (games, the like) then DS went in. The only clue was that it was held in a church. ImanaveragepersonAMA - to answer your question - it was not presented as a religious club when I entered.
