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
House of Commons of the United Kingdom his Black Rod, and only then is granted admittance, where he informs the MPs that the Monarch awaits them, after which they proceed to the House of Lords for the Queen's Speech. During debates, Members may speak only if called upon by the Speaker (or a Deputy Speaker, if the Speaker is not presiding). Traditionally, the presiding officer alternates between calling Members from the Government and Opposition. The Prime Minister, the Leader of the Opposition, and other leaders from both sides are normally given priority. All Privy Counsellors used to be granted priority; however, the modernisation of Commons procedure in