In English church history, a nonconformist was a Protestant who did not "conform" to the governance and usages of the established Church of England. Broad use of the term was precipitated after the Restoration of the British monarchy in 1660, when the Act of Uniformity 1662 re-established the opponents of reform within the Church of England. By the late 19th-century the term specifically included the Reformed Christians (Presbyterians, Congregationalists and other Calvinist sects), plus the Baptists and Methodists. The English Dissenters such as the Puritans who violated the Act of Uniformity 1559 — typically by practising radical, sometimes separatist, dissent — were retrospectively labelled as nonconformists.
By law and social custom, nonconformists were restricted from many spheres of public life—not least, from access to public office, civil service careers, or degrees at university—and were referred to as suffering from civil disabilities. In England and Wales in the late 19th century the new terms "free churchman" and "Free Church" started to replace "dissenter" or "Nonconformist."
One influential nonconformist minister is Matthew Henry, who beginning in 1710 published his multi-volume Commentary that is still used and available in the 21st century. Isaac Watts is an equally recognized nonconformist minister whose hymns are still sung by Christians worldwide.
The Act of Uniformity of 1662 required churchmen to use all rites and ceremonies as prescribed in the Book of Common Prayer. It also required episcopal ordination of all ministers of the Church of England—a pronouncement most odious to the Puritans, the faction of the church which had come to dominance during the English Civil War and the Interregnum. Consequently, nearly 2,000 clergymen were "ejected" from the established church for refusing to comply with the provisions of the act, an event referred to as the Great Ejection. The Great Ejection created an abiding public consciousness of non-conformity.