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
Speaker of the House of Commons (United Kingdom) Secretary. The Serjeant-at-Arms attends the Speaker on other occasions, and in the House; he or she bears a ceremonial mace that symbolises the royal authority under which the House meets, as well as the authority of the House of Commons itself. Customarily, Speakers are appointed to the Privy Council upon election. Thus, the present and former Speakers are entitled to the style "The Right Honourable". On retirement, Speakers were traditionally elevated to the House of Lords as viscounts. The last Speaker to receive a viscountcy was George Thomas, who became Viscount Tonypandy on his retirement in 1983. Since that year,