Police officers are being asked to solve more than 50 crimes a year each as their workload soars.
They are struggling with a mountain of cases amid record levels of violence and knife crime, research by the College of Policing found.
The average number of crimes an officer investigates has increased from 35 in 2013/14 to 51 last year.
Research by the College of Policing found that officers are being asked to take on more and more cases
The report raises concerns that offenders are slipping through the net due to the sheer number of cases.
The College of Policing also found that the cost to taxpayers of responding to and investigating offences has increased by 51 per cent since 2012.
This is partly because longer and more complex investigations often involve analysing phone and computer material. And whereas officers in the past may have focused on burglaries, now they deal with crimes such as historical sexual offences, which take more time to investigate.
The figures come as a survey by the Police Federation revealed that 90 per cent of its members feel there are too few officers to meet demand.
It found that three-quarters of bobbies have to walk the beat alone.
The organisation, which represents 120,000 rank and file officers in England and Wales, said police and the public are being exposed to ‘increased risk’. Two-thirds of officers reported being physically attacked at least once in the past 12 months.
The majority of police officers now feel there are too few of them on the streets to deal with crime