Prime Minister David Cameron has said the Magna Carta was "revolutionary" in shaping the world and is "as relevant today" as it was eight centuries ago.
Speaking at a 800th anniversary event at Runnymede Meadows in Surrey where the historic document was sealed, he said the "Magna Carta is something every person in Britain should be proud of".
"On this historic day, let us pledge to keep those principles alight, let us keep Magna Carta alive, because as those barons showed all those years ago, what we do today will shape the world for many, many years to come."
The controversial historian has branded the original Magna Carta a 'failure' although admitted the amended version was 'hugely' important.'
As the 800th anniversary of the Magna Carta being sealed in June 1215 is marked, we look at some of the key figures behind the document.
A statue of the Queen has been unveiled to mark the 800th anniversary of the sealing of the Magna Carta.