What were the effects of slave trade on British economy?

The first effects upon the British were increased riches and the ability to build fine stately homes filled with valuable furniture, paintings and with huge gardens surrounding them. Plantations were set up for sugar, a new product that now became available. Industrialisation was facilitated particularly by cotton, mills set up for working it.

Accepting produce enabled by slave labour meant that people needed to regard slaves as less than human. By the 19th century, the whole idea of enslaving others being contrary to christian teaching, the practice fell into disrepute and laws passed against it. There was more of a move to free trade.