Bedfordshire police have launched a week long campaign to crackdown on modern slavery.
Officers will be targeting those who traffic people into the sex trade.
The public are being asked to look out for warning signs and report suspicious or concerning behaviour to police.
Detective Chief Inspector David Cestaro, force lead for modern slavery, said: “Typically, victims of this type of exploitation are tricked into believing they are coming to the UK for good employment, before being forced to work from what have been termed ‘pop-up brothels’.
"Through a number of recent brothel closures, Bedfordshire Police has identified this is a phenomenon which exists in our area."