Two hundred years ago, the British Parliament outlawed the slave trade.
As part of the events going on to mark the anniversary, the BBC is running a series of features on modern slavery.
Every year, around 4,000 women are trafficked into England and sold into sex slavery.
- Learn about what the police are doing to tackle trafficking in Sussex
- Read about efforts to counsel and rehabilitate women who have escaped from traffickers
- And the work of the Poppy Project, which provides shelter for trafficked women
- Finally, read the personal testimony of trafficked women, including 19 year-old Rosemary from Nigeria, Nicoleta from Romania, who was trafficked into the UK at the age of 18, Edita and Jiera from Lithuania and Dean Sim Lin from Malaysia