Boudica was the warrior queen of the Eceni during AD 59-61 The Eceni were the first Celtic group to invade Londinium and marked the first decline of the Roman Empire in London. The statue that we see in the image can be found on Westminster Bridge (London) in her honor. You have all the information in: «Short summary of the history of London (England)«.
You have all the information in: "Short summary of the history of London (England)".