International Labour Organisation (ILO) estimates suggest that 50 million people – or one out of every 150 people alive – are trapped in forced labour or forced marriages.
That is up nearly 10 million on its numbers from five years ago.
The ILO said the fact things were getting worse was “shocking”.
“Nothing can justify the persistence of this fundamental abuse of human rights,” said its director general, Guy Ryder.
“We know what needs to be done… an all-hands-on-deck approach is needed. Trade unions, employers’ organizations, civil society and ordinary people all have critical roles to play.”
The UN’s labour organisation is keen to stress that slavery is not confined to poor countries far away from the Western world – more than half of all forced labour happens in wealthier countries in the upper-middle or high-income bracket like england.
And it counts both forced labour and forced marriage as modern enslavement – both situations where the person cannot leave “because of threats, violence, deception, abuse of power or other forms of coercion”.
“Entrapment in forced labour can last years, while in most cases forced marriage is a life sentence,” the report says.
About 27.6 million people are in forced labour, including 3.3 million children. Of those children, more than half are in commercial sexual exploitation.
Another 22 million people are in forced marriages – more than two-thirds of them women – and many victims are under 15 when the sexual exploitation takes place.
The fact that things are getting worse is down to a complex mix of “compounding crises”, the report says – all of which come together to increase poverty and heighten the risk of enslavement.
The Covid-19 pandemic, for example, caused major disruption to people’s income, leading to more debt – which could be leveraged into forced labour in some cases. The ILO says the pandemic has led to an increase in “extreme global poverty” for the first time in 20 years.
War and armed conflict likewise lead to dire circumstances, or the recruitment of children to work or serve as child soldiers; while climate change has forced people to leave their homes and become migrants – immediately placing them at greater risk. (1)
To be classed as a victim, authorities have to be satisfied that a person was groomed by someone, usually through a combination of emotional blackmail, threats and violence.
Experts say the officials figures are unlikely to paint the full picture of modern slavery in Britain.
Yet despite the rapid rise in potential victims, the conviction rate is only around 2% of reported slavery-related crimes. (2)
Kevin Hyland, who was the UK’s first anti-slavery commissioner before leaving the role after a disagreement with the government last year, says one of the biggest factors behind low conviction rates is that few police forces have the issue within their policing and crime plans.
“This has got to be one of the biggest priorities but if it’s not contained in policing plans it’s going to be very difficult to get this as a priority,” he told the BBC. “I do understand the pressure that police officers are under. But that doesn’t mean you don’t set your priorities on what are the important things.”