The English Parliament passes the Act of Toleration protecting dissenting Protestants but excluding Roman Catholics.

The Toleration Act 1688 (1 Will & Mary c 18), also referred to as the Act of Toleration, was an Act of the Parliament of England. Passed in the aftermath of the Glorious Revolution, it received royal assent on 24 May 1689.The Act allowed for freedom of worship to nonconformists who had pledged to the oaths of Allegiance and Supremacy and rejected transubstantiation, i.e., to Protestants who dissented from the Church of England such as Baptists, Congregationalists or English Presbyterians, but not to Roman Catholics. Nonconformists were allowed their own places of worship and their own schoolteachers, so long as they accepted certain oaths of allegiance.

The Act intentionally did not apply to Roman Catholics, Jews, nontrinitarians, and atheists. It continued the existing social and political disabilities for dissenters, including their exclusion from holding political offices and also from the universities. Dissenters were required to register their meeting houses and were forbidden from meeting in private homes. Any preachers who dissented had to be licensed.

Between 1772 and 1774, Edward Pickard gathered together dissenting ministers, to campaign for the terms of the Toleration Act for dissenting clergy to be modified. Under his leadership, Parliament twice considered bills to modify the law, but both were unsuccessful and it was not until Pickard and many others had ended their efforts that a new attempt was made in 1779. The Act was amended in 1779 by substituting belief in Scripture for belief in the Thirty-Nine Articles of the Anglican churches, but some penalties on holding property remained. Penalties against Unitarians were finally removed in the Doctrine of the Trinity Act 1813.

The Parliament of England was the legislature of the Kingdom of England from the mid 13th to 17th century. The first English Parliament was convened in 1215, with the creation and signing of the Magna Carta, which had established the rights of barons (wealthy landowners) to serve as consultants to the king on governmental matters in his Great Council. In 1295, Parliament evolved to include nobles and bishops as well as two representatives from each of the counties and towns in England and, since 1542, Wales. This became the model for the composition of all future Parliaments. Over the course of the next century, the membership of Parliament was divided into the two houses it features today, with the noblemen and bishops encompassing the House of Lords and the knights of the shire and local representatives (known as "burgesses") making up the House of Commons. During Henry IV's time on the throne, the role of Parliament expanded beyond the determination of taxation policy to include the "redress of grievances," which essentially enabled English citizens to petition the body to address complaints in their local towns and counties. By this time, citizens were given the power to vote to elect their representatives—the burgesses—to the House of Commons.

In 1066, William the Conqueror introduced what, in later centuries, became referred to as a feudal system, by which he sought the advice of a council of tenants-in-chief (landowners) and ecclesiastics before making laws. In 1215, the tenants-in-chief secured Magna Carta from King John, which established that the king may not levy or collect any taxes (except the feudal taxes to which they were hitherto accustomed), save with the consent of his royal council, which gradually developed into a parliament.

Over the centuries, the English Parliament progressively limited the power of the English monarchy, a process that arguably culminated in the English Civil War and the High Court of Justice for the trial of Charles I.