how do i get from london to see magna carta area by boat
You can take a boat to Runnymede from Windsor. It's only a few miles down stream but is a slow trip with locks to pass through.
If you have a car, you could continuing traveling another 65 miles west to Salisbury Cathedral, where you can see one of the original copies of the Magna Carta.
FYI - IF any of you happen to be in the San Francisco area: An original Magna Carta will be in San Francisco May 7 - June 5, 2011 at the Legion of Honor...