The PSNI has the UK's highest number of officers with three or more complaints, figures released on Thursday show.
The report said 376 detectives in Northern Ireland were subject to at least three allegations over the past year.
It is over 100 more than the second highest offender, the Metropolitan Police, with 273.
Most complaints were about rudeness, assault or failure of duty, according to the Freedom of Information request.
A total of 2,073 police officers across the UK have received three complaints or more, the BBC survey found.
Altogether, the statistics from 43 out of 52 constabularies showed more than 5,000 complaints were made against officers over the past year.
One officer in the West Midlands was also made to wear a headcam on duty because of the allegations, while another had their Taser training deferred.
Of the minority of forces which provided details about the complaint outcomes, more than half led to no further action.
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