None
I am a Pastafarian and worship the mighty FSM, blessed be his sauce. You can learn more at The Church of the Flying Spaghetti Monster.
I'm an atheist :p
I was brought up as a Methodist. But am now agnostic, and probably an atheist.
Undecided at the moment
Agnostic
Muslim
I'm stuck in a realm of uncertainty right now but I grew up Methodist.
Reformed Catholic. I was raised Catholic and I believe in God, just not the church. Or any church.
I grew up with a Seventh-day Adventist background but im seeking other sects because i don't agree with the Trinity doctrine (although, SDA's claim to be Trinitarian but they teach 3 separate God's like the mormons, not the orthodox version which states that all 3 persons are of the same substance. SDA's teach that the Father, Son, and Holy Spirit are 3 separate spirits who are only one in unity, character, and purpose.. not substance.)
I'm one of Jehovah's Witnesses.
Testigo de Jehovah
I'm a Pastafarian.
I'm a Christian, a Baptist rather.
Catholic
You should visit a local government data site and gather your statistics data from there, if you want to be accurate that is.
For example - http://ukdataexplorer.com/census/northwest/ - this one is a statistics site for the North West of England but you get the idea.
P.S I am also a Pastafarian but you can chalk me up with all the atheists.
Atheist
I have no Religion, but as far as a personal perspective . . .
I am a "Free Thinker" with regards to the natural World, and "Pure Atheist" with regards to the concepts of Gods/God.