This book provides a good overview of Britain's role in the slave trade. You come to realise that Bristol and Liverpool, in particular, became wealthy cities through their involvement, and how they simply viewed what they were doing as they would any other form of trade. But it's also apparent that 'hands were dirtied' at each point of the triangle - Britain, Africa and the New World. The section relating to the legacy of the slave trade was also most enlightening.
The book is very easy to read, laying out the basic facts, and provides a good springboard for further reading around the subject.