Using data from the Independent Police Complaints Commission (IPCC), security website locksmithservice.co.uk produced a breakdown of complaints received by each force in the last year.
In Suffolk, the company found complaints has risen 10% from 289 in 2015/16 to 317 in 2016/17.
A Suffolk Constabulary spokesman said the figures were due to more public complaint cases being finalised than in the previous year.
“More investigations came to a conclusion in 2016/17 due to their complex nature, or were delayed due to the sub judice process, than in the previous year,” they added.
“We take all public complaints seriously as they assist us in identifying areas for improvement.
“We recognise that it is vitally important to learn from our complaints and we duly record and deal with them all whether they are of a serious or relatively minor nature.”
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