Limes Britannicus rapidly to the west and north. Many regions of Britain continued to be governed by the Roman model even after the Romans left, but this practice soon ceased with the continuous encroachment of Anglo-Saxon renegades. With the collapse of the old administrative districts into independent small kingdoms, the jointly maintained provincial army also lost its Roman character. Four years after the Roman invasion, the conquered territory extended roughly as far as a line from Exeter " (Isca Dumnoniorum) " to Lincoln " (Lindum Colonia)", an important intra-Britannic transport hub. Around 55 AD the main camp of the "Legio II Augusta"
Limes Britannicus was established in "Isca Dumnoniorum". This was abandoned about 75 AD and the place was elevated into the "civitas" of the Dumnonii. The city of Lincoln was initially the headquarters of the "Legio IX Hispana" and, at the end of the reign of Domitian, was elevated to a "Colonia". It lay on the river Witham, another important communication route. Near the town there was probably a bridge across the river. "Ermine Street" linked London ("Londinium") with the legion camp of York ("Eburacum"). In addition, one of Roman Britain’s main roads, the "Fosse Way", which ran from the west from the