I'm seriously considering leaving central Illinois. There are a few atheists here, and while I feel obligated to find or convert more here in Springfield, like some kind of atheist missionary, most of these people are not only unreachable, they dominate the public and private sectors of the economy and have no tolerance for atheists.
What is the most predominantly atheist or predominantly progressive place to live in the U.S. where I can move and finally earn a decent living?
Regarding the OP question in particular:
"polls have shown that public opinion in the United Kingdom generally tends towards a suspicion or outright disapproval of radical or evangelical religiosity, though moderate groups and individuals are rarely subject to injurious treatment."
In particular, look at the statistics and you will see overrun is hardly the case.
As the OP wanted a non-religious vibe/atmosphere... :)