As things get worse, I expect a spiritual renewal of sorts in Britain. Maybe not of the scale needed, unfortunately, but a Christian identity should begin to re-solidify.
But what do I know? I'm a silly American, but I lived and worked in Britain. I went to church regularly when I was there, and I had classmates and co-workers who hadn't been to a church in years who would go with me.
Such as shame, as well. Britain is home to such a beautiful spiritual history and church. I can't imagine how anyone attending evensong couldn't help but be moved...
I really hope you are correct. I work with some Brits who are Christians. They are particular discouraged about the state of the church.