France was a Catholic country but it experienced a series of religious civil wars between 1560 and 1590. This resulted in French Protestants [Huguenots] migrating to England.
August 1572: St Bartholomew's Day Massacre
Thousands of French protestants were killed, many migrating to Britain.
In 1685 Louis XIV revoked the Edict of Nantes which meant that all French Protestants had to convert back to Catholicism or leave France.
The Edict of Nantes (1598) gave the Huguenots freedom of worship and allowed them to live where they wanted
In 1685, the Huguenots were officially heretics and faced persecution once more. Around 50,000 escape to England.
Many Huguenot refugees settled in London as skilled craftsmen and merchants. They set up their own businesses and became successful.
From 1572 to 1598, Elizabeth I made England a safe place for Huguenots, inviting them to work in England and teach apprentices.