The Clergy Act 1640 (also known as the Bishops Exclusion Act or the Clerical Disabilities Act) (16 Car. I, c.27) was an Act of Parliament of the Parliament of England passed in 1642 by the Long Parliament.
As the 1630s progressed, there was increasing dissatisfaction with Charles I's attempts at personal rule, and at the perceived connivance of the bishops. The mood in the country was for the Anglican episcopal system of church government to be replaced with local government by presbyters, either on the Scottish or the English model. Charles raised the temperature when he raised his standard in the Bishops' Wars, which attempted to impose an episcopacy in Scotland. The result in England was the Root and Branch petition, and in the House of Commons, a series of Constitutional reforms to stem the power of the monarch, once and for all:
Though there had been general support for these measures in the House of Commons, in the House of Lords the Bishops opposed the Acts.
The Bishops Exclusion Bill, which intended the expulsion of the Bishops from the House of Lords, was a direct response to the Bishops’ opposition to the Constitutional reforms that had been passed by the lower house. While awaiting the Royal Assent, some MPs, led by John Pym, encouraged the London mob to prevent the Bishops attending on 27–29 December 1641. There were riots in Westminster against bishops, and papists too. On 30 December, John Williams, Archbishop of York, drew up a protest complaining about the legality of laws passed in the House of Lords while they were thus excluded from attending. As well as Williams, eleven other bishops signed the protest. The Commons demanded the arrest and imprisonment of all twelve, who were sent to the Tower as traitors.