All of the statues are male except for the bust of Roma and many of these men are instantly recognizable from the annals of Roman history. The governors of Britain are less recognizable names and yet played a far more important role than any Emperor in conquering Britain.
Ostorius Scapula (governor 47-52 AD) had a huge impact on both the military and the economy of Britain, but Scapula is most famous for capturing Caratacus. Caratacus was the most powerful British warlord before the Roman invasion and he continued to be a thorn in Roman sides for a long time after, until he was captured and sent to Rome by Scapula.
These men are great characters from history and have had a huge impact upon the British nation. Their role in history should not be forgotten or ignored merely because they never rose to the same dizzy heights as the Emperors.