Who was involved in the abolition of the slave trade?

non slave groups such as the the society for the abolition of the slave trade, and the Quakers.

slaves who did revolts and rebellions

ex slaves who exposed how terrible life was as a slave

MPs

the British government because they were no longer benifitting from the slavee trade since it did not save them money and demand for slave trade fell so the slave trade became a pointless waste of time.