One member of a grooming gang spoke to British investigators in derogatory terms about British girls and said: "You can get anything here."
The Serious Case Review team spoke to the asylum seeker in prison to try to understand his motivation for abusing vulnerable women and girls, but he refused to show remorse and blamed a British government cover-up.
According to the review, the abusers were mainly "not white but came from a diverse range of backgrounds including Pakistani, Bangladeshi, Indian, Iranian, Iraqi, Kurdish, Turkish, Albanian and eastern European".
The only one to agree to speak to the inquiry had spent 10 years in Turkey, around five in Greece and some time in Italy and France, and hoped to get to Canada.
He exploited a 15-year-old girl but told the inquiry team he was only convicted "because of a conspiracy by the government, police and the judge who paid the victims".
The report continued: "If convicted for rape in his home country, he would be beheaded or buried up to the neck and stoned.
"He was asked about what he thought about the United Kingdom and influences in his education.
"He said you can get anything here - any sex, drugs, alcohol. There is no control.
"He spoke in a derogatory way about lack of morals in British girls and did not go with Muslim girls because there are not many of them."
The report said it was "unfortunate" there was not more input from other perpetrators.