British Prime Minister Theresa May welcomes French President Emmanuel Macron for a high-profile Franco-British summit expected to focus on migration and Brexit.
Reports of African migrants being tortured, killed and sold as slaves in Libya have caused a global outcry. The few who manage to escape the horrors carry deep physical and psychological scars.
French President Emmanuel Macron called the trafficking of African migrants a "crime against humanity" on Tuesday as he made his first major address on the continent before a crowd of university students in Burkina Faso.
The EU has unveiled plans to take at least 50,000 refugees directly from Africa, the Middle East and Turkey to discourage migrant boats from making the risky Mediterranean crossing.
The European Union should not hinder migrants from leaving Libya, where they are often subject to torture, slave labour and sexual violence, international charity Oxfam warned Wednesday.