Fourteen Devon and Cornwall Police officers and staff are currently being investigated for sexual offences, it has emerged.
A Freedom of Information Act request revealed they are among 169 officers and support staff nationwide facing inquiries for inappropriate sexual behaviour.
Complaints include sexual assault, other sexual misconduct, possession of indecent images and inappropriate sexual behaviour at work.
Devon and Cornwall Police confirmed that at the end of June there were 14 unresolved investigations – the fourth highest number in the country. There are five similar inquiries being undertaken in Avon and Somerset but none in Dorset.
The Metropolitan Police has the highest number of cases, at 42. It covers 47 allegations – 36 allegations of sexual assault and 11 of inappropriate sexual conduct.
Chief Constable Shaun Sawyer said: "I expect the utmost integrity, honesty and professionalism from all of my staff at all times.
"When I became Chief Constable in Devon and Cornwall, I made it very clear this was the case and that I would deal robustly with anyone falling below this standard.
"I received so much support from officers and staff for making my position clear, as it is the action of a selfish few who so often impact adversely upon the hard work and reputation of the Constabulary.
"Any allegations against officers and staff of a serious nature, such as that of inappropriate sexual behaviour, are assessed by the Force Professional Standards Department. Following that assessment, there may then be referral to the Independent Police Complaints Commission. Any investigation will consider both criminal and misconduct matters.
"Since my appointment, individuals have received discipline sanctions where misconduct is proven. Where appropriate, individuals are dismissed and in some cases where there are criminal allegations which are proven at Court, imprisoned.
"Equally, where someone is exonerated then it is important that they feel supported throughout the process and supported in continuing with their duties.
"The public of Devon and Cornwall have a right to expect their police force to show values and behaviour befitting of those in public office, something I will uphold at every opportunity."
Concerned senior officers met in Chester to discuss increasing fears about corrupt policemen carrying out offences such as rape, sexual assault and voyeurism.
It comes after a number of cases of officers abusing their position to carry out sexual assaults or make inappropriate advances to members of the public and vulnerable victims of crime.
The Independent Police Complaints Commission (IPCC) said it is currently overseeing just 31, or 18%, of the cases.