From the National Archives:
... in 1297, Magna Carta was formally recognised as law. Three important clauses still form a part of English statute law today. The best known is:
'No free man shall be seized or imprisoned, or stripped of his rights or possessions ... except by the lawful judgement of his peers.'
Two clauses from it became the American fifth and sixth amendments and the American Bar Association paid for a memorial to be erected in Runnymede Meadows.
Just a few hundred yards away is the memorial to JFK situated in an acre of land given to America by the Queen on behalf of the British people. When we went there I was half expecting an American solider to be on guard duty at the gate but it was an empty and peaceful setting.But it felt quite strange to be standing on American territory while in the heart of England.