The Romano-British culture arose in Britain under the Roman Empire following the Roman conquest in AD 43 and the creation of the province of Britannia. It arose as a fusion of the imported Roman culture with that of the indigenous Britons, a people of Celtic language and custom.
Relative degrees of Romanisation, based on archaeology. Romanisation was greatest in the southeast, extending west and north in lesser degrees. West of a line from the Humber to the Severn, and including Cornwall and Devon, Roman acculturation was minimal or non-existent.
Roman coins findings clearly indicate the areas of biggest "cultural romanisation" and presence in Roman Britain
Roman Britain was the territory that became the Roman province of Britannia after the Roman conquest of Britain, consisting of a large part of the island of Great Britain. The occupation lasted from AD 43 to AD 410.
Conquests under Aulus Plautius, focused on the commercially valuable southeast of Britain
Roman campaigns 43–60
Agricola's campaigns
In 84 AD