Antisemitism in the United Kingdom originated with the arrival of Jews in the country soon after the Norman Conquest. The earliest Jewish settlement was recorded in 1070. Jews living in the United Kingdom at this time experienced religious discrimination and it is thought that the blood libel which accused Jews of ritual murder originated in Northern England, lead to massacres and increasing discrimination. The Jewish presence continued until King Edward I's Edict of Expulsion in 1290.
Jews were readmitted to the United Kingdom by Oliver Cromwell in 1655, though it is believed that crypto-Jews lived in England during the expulsion. Jews were regularly subjected to discrimination and humiliation which waxed and waned over the centuries, gradually declining as Jews made commercial, philanthropic and sporting contributions to the country.
In the late 19th and early 20th century, the number of Jews in Britain greatly increased due to the exodus of Jews from Russia, which resulted in a large community of Jews forming in the East End of London. Popular sentiment against immigration was used by the British Union of Fascists to incite hatred against Jews, leading to the Battle of Cable Street in 1936, at which the fascists were repulsed by Jews, Irish people and Communists who barricaded the streets.
In the aftermath of the Holocaust, undisguised, racial hatred of Jews became unacceptable in British society. Outbursts of antisemitism emanating from far right groups continued however, leading to the formation of the 43 Group led by Jewish ex-servicemen which broke up fascist meetings. Far-right antisemitism was motivated principally by racial hatred, rather than theological hatred which accused Jews of killing Christ.