The first Book of Common Prayer was legally mandated by Parliament, introducing a fully vernacular Protestant liturgy to the Church of England.

The 1549 Book of Common Prayer (BCP) is the original version of the Book of Common Prayer, variations of which are still in use as the official liturgical book of the Church of England and other Anglican churches. Written during the English Reformation, the prayer book was largely the work of Thomas Cranmer, who borrowed from a large number of other sources. Evidence of Cranmer's Protestant theology can be seen throughout the book; however, the services maintain the traditional forms and sacramental language inherited from medieval Catholic liturgies. Criticised by Protestants for being too traditional, it was replaced by the significantly revised 1552 Book of Common Prayer.

Protestant liturgy or Evangelical liturgy is a pattern for worship used by a Protestant congregation or denomination on a regular basis. The term liturgy comes from Greek and means "public work". Liturgy is especially important in the Historical Protestant churches, both mainline and evangelical, while Baptist, Pentecostal, and nondenominational churches tend to be very flexible and in some cases have no liturgy at all. It often but not exclusively occurs on Sunday.

The Church of England is the established Christian church in England and the Crown Dependencies. It was the initial church of the Anglican tradition. The Church traces its history to the Christian hierarchy recorded as existing in the Roman province of Britain by the 3rd century and to the 6th-century Gregorian mission to Kent led by Augustine of Canterbury. Its members are called Anglicans.