Question: Who got rid of the romans in britain?

Disambiguated questions and answers:
context: No context provided
question: Who was responsible for getting rid of the Romans in Britain?
short_answers: Romano-Britains
context: In 383, the usurper Magnus Maximus withdrew troops from northern and western Britain, probably leaving local warlords in charge. Around 410, the Romano-British expelled the magistrates of the usurper Constantine III, ostensibly in response to his failures to use the Roman garrison he had stripped from Britain to protect the island. Roman Emperor Honorius replied to a request for assistance with the "Rescript of Honorius", telling the Roman cities to see to their own defence, a tacit acceptance of temporary British self-government. Honorius was fighting a large-scale war in Italy against the Visigoths under their leader Alaric, with Rome itself under siege. No forces could be spared to protect distant Britain. Though it is likely that Honorius expected to regain control over the provinces soon, by the mid-6th century Procopius recognised that Roman control of Britannia was entirely lost.
question: Who withdrew Roman troops from Britain?
short_answers: Magnus Maximus
wikipage: End of Roman rule in Britain

Long-form answers:
knowledge: content: Roman rule ended in different parts of Britain at different times, and under different circumstances.
wikipage: End of Roman rule in Britain
content: Magnus Maximus (Latin: [ˈmaŋnus ˈmaksimus]; Welsh: Macsen Wledig [ˈmaksɛn ˈwlɛdɪɡ]; c. 335–28 August 388) was Roman emperor in the western portion of the Empire from 383 to 388.
wikipage: Magnus Maximus
long_answer: Roman rule ended in different parts of Britain at different times, and under different circumstances. In 383, the usurper Magnus Maximus (Roman emperor in the western portion of the Empire from 383 to 388) withdrew troops from northern and western Britain. Then around 410, the Romano-Britains expelled the magistrates of the usurper Constantine III. 
knowledge: content: The end of Roman rule in Britain was the transition from Roman Britain to post-Roman Britain.
wikipage: End of Roman rule in Britain
content: By the early 5th century, the Roman Empire could no longer defend itself against either internal rebellion or the external threat posed by Germanic tribes expanding in Western Europe.
wikipage: End of Roman rule in Britain Background
content: This situation and its consequences governed the eventual permanent detachment of Britain from the rest of the Empire.
wikipage: End of Roman rule in Britain Background
long_answer: The end of Roman rule in Britain was the transition from Roman Britain to post-Roman Britain. In 383, the usurper Magnus Maximus withdrew troops from northern and western Britain, probably leaving local warlords in charge. Around 410, the Romano-Britains expelled the magistrates of the usurper Constantine III, ostensibly in response to his failures to use the Roman garrison he had stripped from Britain to protect the island. By the early 5th century, the Roman Empire could no longer defend itself against either internal rebellion or the external threat posed by Germanic tribes expanding in Western Europe. This situation and its consequences governed the eventual permanent detachment of Britain from the rest of the Empire.