A 'Pest house' (isolation hospital in times of plague), Tothill Fields, Westminster, London, England. After Cromwell's victory at the Battle of Worcester in September 1651, some 4,000 defeated Royalists were imprisoned at Tothill Fields prior to being sold as slaves to merchants trading with Africa and the West Indies. Facilities at the prison camp on the marshy ground were so poor that 1,200 prisoners were recorded as having died in the primitive conditions.

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