Really? I understand why we would hope that were true. But what is it about the modern UK that makes you think that would be anywhere remotely the case?
It's not Dickensian Christmas over there anymore than it is here in America. We can't have bibles within 150 feet of a school or a courtroom...why do you think it has been better over there?
And "tired of" secularism doesn't really make sense.
Conservatism -is- tiredness. It is the opposite of activism, such as pointed out by Russell Kirk in "The Conservative Rout."
The least common denominator is the least amount of conflict within a society, and a "Christian culture" with huge airports and immigrant traffic by it's very tolerant nature will dissolve down into non-confrontational PC-isms allowing gay, muslim, secular activists to take the unopposed lead.
Where Great Brtain goes, we will soon be.
2. Islam threatens the SECULAR culture of the UK, which has had enough of wars over religion to the point of rejecting religion altogether.