House of Commons of the United Kingdom canister of chlorobenzylidene malonitrile (tear gas). Even members have been known to disturb proceedings of the House. For instance, in 1976, Conservative MP Michael Heseltine seized and brandished the Mace of the House during a heated debate. However, perhaps the most famous disruption of the House of Commons was caused by Charles I, who entered the Commons Chamber in 1642 with an armed force to arrest five members for high treason. This action was deemed a breach of the privilege of the House, and has given rise to the tradition that the monarch does not set foot in the House
Unreformed House of Commons Unreformed House of Commons "Unreformed House of Commons" is a name given to the House of Commons of Great Britain and (after 1800) the House of Commons of the United Kingdom before it was reformed by the Reform Act 1832. Until the Act of Union of 1707, which united the Kingdoms of Scotland and England to form Great Britain, Scotland had its own Parliament, and the term can be used to refer to the House of Commons of England (which included representatives from Wales from the 16th century). From 1707 to 1801 the term refers to the House of Commons