Met police complaints rise by 26%
The number of complaints against the Metropolitan Police has risen by a quarter, Scotland Yard has said.
There were 11,925 complaints in the year up to March, up from 9,464 the previous year - a 26% increase.
Complaints arising out of public protests contributed "significantly" to the rise, said police.
They do not include G20 protest complaints.
Oppressive behaviour allegations against London officers and staff rose by almost 18%.
Allegations of incivility rose by 20% and "failure of duty" by 29%, said police.
There were also 885 allegations of discriminatory behaviour - a rise of 40% on the previous year.
There has been an upward trend in complaints since 2004, but the number of allegations per 1,000 officers had always been lower than the average for England and Wales, the Met said.
Clashes between police and protesters at the G20 summit in London in April led to a further 145 complaints, the Independent Police Complaints Commission (IPCC) has said.
They include 70 claims of excessive force by alleged victims or witnesses to brutality, the organisation added.
BBC home affairs correspondent Danny Shaw said: "The previous year complaints went up slightly, but even though there is an upward trend, this is a significant increase.
"It may be partly attributable to new methods of reporting and recording complaints, but nevertheless it will be something that will be a worry for the Metropolitan Police."