Lost my train of thought there for a mo.
Anyway, churches have long since ceased to be the highlight of most peoples' week. Short of competing with nightlife venues, they're going to struggle to draw the crowds. People are more independent minded and not willing to be preached to any more. They're not going to let anyone tell them how to live their lives, although they may thrash out their own set of cultural values and behavioural norms via debates online and in the media.
Rather than extort money through menaces, the various religions obtain it by charm and persuasion. They set up a command hierarchy and exert power, not just over the populations of nations but the leaders and monarchs of those nations.
Then again, it's easy to see threat of disbarment from heaven as menaces of a sort. So basically just a twist on the protection racket.
The future of Religion in Britain I cannot begin to guess about but if there were more signs of that reservoir of wealth coming back to those in critical need of it, that would be a good sign. At least it would make it seem like they've read their own book. ;)