Eight men have been arrested during dawn raids by officers investigating child sexual exploitation dating back to 2005.
Thames Valley Police said 120 officers had raided 10 addresses at 07:00 BST.
The offences relate to two female victims in the Aylesbury area between 2005 and 2012 and police said the raids were prompted by information received “earlier this year”.
The arrested men are aged between 28 and 45.
Officers raided six properties in Aylesbury, one in Milton Keynes, one in Buckingham, one in Chesham and one officers only described as “in Middlesex”.
A number of warrants are still being carried out, a force spokesman said.
Acting Supt Olly Wright said: “The police action taken today comes as a result of information given to the police earlier this year.
“I understand today’s events will have an impact on the community and people will be concerned about the nature of these arrests.
“If anyone has any concerns at all about offences relating to child sex exploitation, if they are a victim or know someone who may be, I urge them to contact Thames Valley Police.”