Where there slaves in Britain?

Yes there was. Slavery was quite common in Britain in the 17th century. In the 17th century there was a slave triangle. It started in Britain, where ships would take metal and guns to villages in Africa. Then they would trade the metal and guns for prisoners that the village had caught.

The slaves would then be transported to the West Indies and America to work on plantations. For the slaves, the plantation owners would trade cotton and sugar. However, not all the slaves would have been traded. Some, would be taken along with the cotton and sugar to Britain, and sold there. Then the triangle begins again.