When it comes to medieval history, London and its environs always figure prominently. Well, it’s inevitable, since the king and Parliament were usually there. Not always, I grant you.
Anyway, I have come upon a very interesting and informative site about Southwark. A little ramble around it will certainly unearth something of interest to you.
For instance, the wall in the photograph above is all that remains of the notorious Marshalsea Prison. It is to the side of the John Harvard Library.