What came to be known as the Long Parliament also began to voice vague grievances against Charles, many of which were religious in nature. Parliament had many Puritans and Puritan-sympathizing members, who generally opposed the existing episcopal system, but there was little agreement over what shape the church should take. Later in 1640, the Root and Branch petition was presented to the House of Commons, the lower house of Parliament. It was signed by about 15,000 Londoners and called for total elimination of the episcopal system. Committees were organized in the House of Commons to enact religious reforms, leading to the imprisonment of Archbishop Laud and his supporters in the Tower of London as retaliation for their repression of Puritans. The Court of High Commission and the Star Chamber, courts which had inflicted severe punishments on Puritan dissenters, were also abolished.