King Edward I of England issued an edict that expelled all Jews in 1290. Jews weren’t allowed in England for the rest of the Middle Ages. It wasn’t until 1656 that the edict was formally overturned. Prior to the expulsion, Jews were key to the English economy.
Usury was forbidden by the church, so many Christians did not go into any kind of lending business. This gave Jewish people a unique chance and revenue for business, becuse no one else would lend money. For right or wrong, they were labeled as extortionate moneylenders. The church and the general public grew to hate them. With time, the situation escalated and the king expelled them from the country.