Sixteen of the 39 bodies of Vietnamese nationals who died while being transported to the UK have been returned home.
The force said it recovered 29 potential human trafficking victims in searches of London addresses that led to 17 arrests this morning.
Police in Devon and Cornwall have arrested and charged two men who pleaded guilty to trafficking Vietnamese people into the UK.
The simultaneous raids in Stockton-on-Tees and Sheffield led to men being held on suspicion of conspiracy to rape, trafficking, blackmail and drugs offences.
Mahad Yusuf and Fesal Mahamud admitted the charges against them
Research shows the practice is commonplace in groups like Isis and this takes place in the Middle East and Africa
Jonatan Majewski, of Woodville Road in Hackney, pleaded guilty to one count of human trafficking for the purpose of labour exploitation
Schwesta Ewa has been sentenced to two-and-a-half years in jail
Spanish migrant rescue group Proactiva Open Arms has claimed Frontex is trying to put people off from donating to aid organisations
A large cannabis factory has been discovered by police in a former nuclear bunker, this had led to the arrest of six men
Home secretary Amber Rudd described modern slavery as a 'barbaric crime' and said 'even more' must be done to combat it