"Religion in the United Kingdom: Diversity, Trends and Decline" by Vexen Crabtree (2007): Results from the 2001 census - 72% say they're Christian, but only 50% believe in God. Between 1979 and 2005, half of all Christians stopped going to church. Britain is host to over 170 religions.
"Growing Fundamentalism Within Christianity Threatens to Become its Mainstream" by Vexen Crabtree (2003)