Irreligion in the United Kingdom is very prevalent, and British society is one of the most thoroughly secularized in the world. Agnosticism, nontheism, atheism, secular humanism, and more so casual non-affiliation or apathy, are highly common. At least 33% of Britons, and over 50% in some recent polls, do not identify with any faith when surveyed. Some 40% of Britons do not believe in a deity, and some 15% are agnostic. While non-affiliation is the primary indicator, objective irreligion does not necessarily correlate with it. A third of Anglicans polled in a 2013 survey doubted the existence of God, while 15% of those with no religion believed in some higher power, and deemed themselves "spiritual" or even "religious."