The research looked at modern slavery in 167 countries. It increased the global estimate to 45.8 million, up from 35.8 million in the last survey. India has the greatest number of people living in some form of slavery, with an estimated 18.3 million. 58% of those living in slavery across the globe are in five countries: India, China, Pakistan, Bangladesh and Uzbekistan. An estimated 11,700 are trapped in slavery in the UK (0.02% of the population).