The Root and Branch petition, signed by 15,000 Londoners calling for the abolition of the episcopacy, is presented to the Long Parliament.

The Root and Branch Petition was a petition presented to the Long Parliament on 11 December 1640. The petition had been signed by 15,000 Londoners and was presented to the English Parliament by a crowd of 1,500. The petition called on Parliament to abolish episcopacy from the 'roots' and in all its 'branches'.

An episcopal polity, also known as episcopalianism, is a hierarchical form of church governance in which the chief local authorities are called bishops. The word "bishop" here is derived via the British Latin and Vulgar Latin term *ebiscopus/*biscopus, from Ancient Greek ἐπίσκοπος (epískopos) 'overseer'. It is the structure used by many of the major Christian Churches and denominations, such as the Catholic, Eastern Orthodox, Oriental Orthodox, Church of the East, Anabaptist, Lutheran, and Anglican churches or denominations, and other churches founded independently from these lineages. Many Methodist denominations have a form of episcopal polity known as connexionalism.

The Long Parliament was an English Parliament which lasted from 1640 until 1660, making it the longest-lasting Parliament in English and British history. It followed the fiasco of the Short Parliament, which had convened for only three weeks during the spring of 1640 after an 11-year parliamentary absence. In September 1640, King Charles I issued writs summoning a parliament to convene on 3 November 1640. He intended it to pass financial bills, a step made necessary by the costs of the Bishops' Wars against Scotland. The Long Parliament received its name from the fact that, by Act of Parliament, it stipulated it could be dissolved only with agreement of the members; and those members did not agree to its dissolution until 16 March 1660, after the English Civil War and near the close of the Interregnum.