The Martyrs' Memorial in Oxford to remember Nicholas Ridley, Hugh Latimer and Thomas Cranmer who were burnt for Heresy in the Reign of Queen Mary Tudor. Cranmer was the last burnt and it is said that before his execution he signed recantations of the Protestant faith. Later during his execution he apparently thrust the hand which held the pen into the fire first.
I'm a massive nerd when it comes to the Reformation during the Tudors Years and Medieval religion in general.