.
In Newquay alone, 14 Airbnb brothers were identified between last summer and January this year.
Sergeant Matt Puttock, the tactical lead for sexual exploitation at Gloucestershire Police, said: "Some of these places visited have been Airbnbs that have been rented out for a week or two.
"These are by their nature often quite hidden places. It's very transient as they often hire Airbnb places or other serviced apartments.
"Many times neighbours do not know what is going on. Landlords have often used us as mediators to try and remove these people once they know what they are up to.
"We collected various bits of information and visited these places not to criminalise the sex workers, but to check on their safety.
"We interview all the women and check why they are there and whether they want to be there.
"Generally we have no power to make them leave the situation they are in but we can use various methods to remove women if needs be.
"But it is difficult. Some are brainwashed to not to talk to the police or any other authority."
Pop-up brothers tend to be less expensive and more discreet than other means for sex gangs Credit: Getty Images Detective Inspector Nick Skipworth of Cambridge Police previously said: "We see a lot of them using flats and these will be £1,000-a-week flats.
"They can easily cover that. I chatted to one Polish girl who was 19 and she was seeing up to ten clients a day and making £100 a client.
"This sort of thing is going on everywhere. There are certain places that they all seem to go and visit — the Romanians almost have a set tour route they follow around the UK."
An Airbnb spokesman said: "We have a zero tolerance policy for issues like these and are urgently investigating.
"There have been over 200 million guest arrivals in Airbnb listings and negative incidents are extremely rare."
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