LONDON, UNITED KINGDOM - FEBRUARY 05: John Bercow, the Speaker of the House of Commons, makes an address during the opening ceremony for the four surviving original parchment engrossments of the 1215 Magna Carta going on display to mark the 800th anniversary of the sealing of Magna Carta at Runnymede in 1215, at the Houses of Parliament on February 5, 2015 in London, United Kingdom. The four original copies of the charter have been put on display together for one day on Thursday for the opening of the exhibition 'Magna Carta and Parliament' which runs during February. The Magna Carta established the timeless principle that no individual, even a monarch, is above the law. In 1215, 40 rebellious barons came together to declare their rights to King John, and he reluctantly consented to their demands in an attempt to avoid civil war. (Photo by Matt Dunham - WPA Pool/Getty Images)

LONDON, UNITED KINGDOM - FEBRUARY 05: John Bercow, the Speaker of the House of Commons, makes an address during the opening ceremony for the four surviving original parchment engrossments of the 1215 Magna Carta going on display to mark the 800th anniversary of the sealing of Magna Carta at Runnymede in 1215, at the Houses of Parliament on February 5, 2015 in London, United Kingdom.  The four original copies of the charter have been put on display together for one day on Thursday for the opening of the exhibition 'Magna Carta and Parliament' which runs during February.  The Magna Carta established the timeless principle that no individual, even a monarch, is above the law.  In 1215, 40 rebellious barons came together to declare their rights to King John, and he reluctantly consented to their demands in an attempt to avoid civil war.  (Photo by Matt Dunham - WPA Pool/Getty Images)