For two hundred years, the abolition of slavery in Britain has been a cause for self-congratulation - but no longer.

In 1807, Parliament outlawed the slave trade in the British Empire. But for the next 25 years more than 700,000 people remained enslaved, due to the immensely powerful pro-slavery group the 'West India Interest'.

This ground-breaking history discloses the extent to which the 'Interest' were supported by nearly every figure of the British establishment - fighting, not to abolish slavery, but to maintain it for profit. Gripping and unflinching, The Interest is the long-overdue exposé of one of Britain's darkest, most turbulent times.