Zamanin Anglo-Saxon na farko ya ƙunshi tarihin
Birtaniyya ta tsakiya wacce ta fara daga ƙarshen mulkin Romawa.Lokaci ne da aka fi sani da shi a tarihin Turai a matsayin Lokacin Hijira, da kuma Völkerwanderung ("ƙaurawar mutane" a cikin Jamusanci).Wannan lokaci ne na ƙaurawar ɗan adam a Turai daga kusan 375 zuwa 800. Baƙi ƙabilu ne na Jamus kamar Goths, Vandals, Angles, Saxon, Lombards, Suebi, Frisii, da Franks;Daga baya Huns, Avars, Slavs, Bulgars, da Alans suka tura su zuwa yamma.Mai yiwuwa bakin hauren zuwa Biritaniya sun hada da Huns da Rugini.Har zuwa AZ 400,
Roman Biritaniya , lardin Britannia, wani yanki ne mai mahimmanci, wanda ke bunƙasa na Daular Rum ta Yamma, wani lokaci tashe tashen hankula na cikin gida ko hare-haren barasa, waɗanda ɗimbin sojojin daular da aka jibge a lardin suka yi nasara ko kuma suka fatattake su.A shekara ta 410, duk da haka, an janye sojojin daular don magance rikice-rikice a wasu sassa na daular, kuma Romano-Britons sun kasance sun bar kansu a cikin abin da ake kira bayan Roman ko "Sub-Roman" lokacin mulkin Karni na 5.