A vice baron who made almost £300,000 trafficking eastern European sex slaves has been jailed for 11 years.
Ismailej was described as the "ringleader" of the group
Vullnet Ismailej, 27, from Wood Green, north London, was jailed at Southwark Crown Court on Tuesday.
He earlier pleaded guilty to conspiracy to bringing women to the UK for sexual exploitation.
Lorenc Roci and Sokol Qata, also both from north London, were also jailed for their part in the operation, which initially began in Birmingham.
Roci, 22, from Finsbury Park, received a four-year jail sentence and 20-year-old Qata, from Wood Green, an 18-month sentence.
The court heard that women kept by Ismailej, an illegal immigrant, were forced to work seven days a week, for up to 13 hours a day, and give up their passports to satisfy his "love of money".
One of the 40 women who worked for him was his fiancée who he was due to marry the day he was arrested.
She wrote in her diary of her emotional and physical "torment".
Roci was described as an "eager lieutenant"
By the time Ismailej was caught he had made nearly £300,000, most of which had been sent back to his family in Albania.
Judge Stephen Robbins said: "This case involved a high degree of planning, organisation and sophistication, saw a large number of people trafficked, and was committed over a long period of time.
"The message must go out to countries where these women came from that those that engage in trafficking girls for prostitution can expect to receive deterrent sentences from the courts in this country."
Qata admitted controlling one of the prostitutes
Roci, described as an "eager lieutenant", had pleaded guilty to one count of conspiracy to control prostitution for gain, while Qata, admitted controlling one of the prostitutes.
Brian O'Neill, prosecuting, told the court that it was evident that the operation, which was initially based in Birmingham, had run for up to two years.
He said it was also clear that Ismailej was the ringleader and that he did not regard the women as anything other than chattels.
All three men were recommended for deportation.