Under Henry VII, a law was passed allowing interest rates up to 10%, so the borrowers could pay the money back. instead of banning interest, he set it at a low enough level so the Jews would be repaid
After Henry VII died, his son Edward VI took his place. Edward repealed his father's law, not allowing interest for money lending of any kind. The result of this was a hardship.
A black market of very high interest began because of this.