The RBO website now provides information about almost every Roman settlement, fort, camp and quarry in the entire British Isles. From the initial forays of Julius Caesar into Cantium (Kent) in 55/54BC, to the beginning of the fifth century AD, when Emperor Honorius informed Britannia that she must defend herself. RBO thus covers a chronological time-span of around half a millenium.
The Romans built the city where London now stands, bridging the Thames and constructing the roads that connected Londinium with the rest of the country. From around AD 50 to 410 – a period as long as that which separates Queen Elizabeth I from our present Queen – this was the largest city in Britannia, a vital port through which goods were imported from all over the world.