Celebrations leading up to the 800th anniversary of the Magna Carta in 2015 are to get under way later.

Master of the Rolls Lord Neuberger and Lord Chancellor Ken Clarke are due to address a public launch at a memorial site in Runnymede, Surrey, where King John sealed the document in 1215.

Exhibitions of the charter of rights are planned in the UK and Commonwealth.

The Magna Carta Trust is also campaigning for a national holiday and a commemorative stamp and coin.