Historically, what is the primary religious affiliation of the United Kingdom?

Christianity has profoundly shaped the UK's history, culture, and social fabric for centuries. Its roots trace back to the Roman period, with the establishment of churches and religious communities. The arrival of St. Augustine in the 6th century marked a significant turning point, leading to the widespread conversion of Anglo-Saxon kingdoms. The Church of England, established in the 16th century during the Reformation, became the state church, further solidifying Christianity's central role. Even today, the monarch serves as the Supreme Governor of the Church of England. While the UK is a multi-faith society with significant Jewish, Muslim, and Buddhist communities, Christianity remains the dominant religion, reflected in its historical buildings, traditions, and cultural values. The presence of numerous cathedrals, parish churches, and religious festivals throughout the year are all testaments to this enduring Christian heritage.
Think of the many historic cathedrals and churches that dot the UK landscape, a testament to its Christian heritage.