As per a report the majority of interviewed migrant workers in the sex industry in London are not forced nor trafficked.
Out of around 100 interviewed it was found that 13% of female interviewees felt they had been taken advantage of.
Only 6%of the female interviewees felt they had been misled and forced into selling sex in circumstances within which they had no share of control or approval.
Last year the Association of Chief Police Officers (ACPO) found at least 2,600 women working as prostitutes in England and Wales, had been trafficked.
London had the highest proportion of migrant sex workers that was around 96 percent.
The International Union of Sex Workers (IUSW) welcomed the new research by a team led by Dr Nick Mai.
The Metropolitan Police said it worked hard to prevent trafficking.
Dr Mai interviewed 100 women, men and transgender people – the largest ever qualitative research into migrants working in the London sex industry.
The research found that many migrants prefer working in the sex industry rather than the unrewarding and sometimes exploitative conditions they meet in non-sexual jobs.
The report also mentions many migrants working in the sex industry send money back to their country of origin, thereby radically improving the living conditions of their families.
As per the report the police efforts to combat organised crime is weakened by the fact that victims of exploitation cannot be guaranteed indefinite leave to remain in the UK.
Catherine Stephens, of the IUSW, said that they will only successfully target trafficking within the sex industry when they make policy based on facts and in actuality.
Stephens added that there was currently a climate of terror among London sex workers due to police activity. It is driven by propaganda and misinformation promoted by NGOs with a financial vested interest in the anti-trafficking industry, who are ideologically opposed to commercial sex.
Rosie Campbell, of the UK Network of Sex Work Projects, said that for some time they had been conveying apprehension about the under-reporting of violent and other crimes committed against sex workers in London.
A Metropolitan Police spokesman said their Human Exploitation and Organised Crime Command worked closely with charitable organisations involved in this sensitive area to save anyone being exploited by these despicable criminals and to prevent these crimes from taking place.
He added that they would urge victims and anyone who suspects people were being forced to work within their community to contact them in confidence on their dedicated free phone number 0800 783 2589.