Three million more crimes are committed in England and Wales every year than Home Office figures indicate, according to a report by a think tank.
Civitas says the British Crime Survey is failing to accurately record the experiences of repeat victims of crime.
That survey puts a limit of five on the number of times a victim can be targeted by the same offender.
The report estimates the number of crimes to be 14 million but the Home Office said its figures were reliable.
Crime figures ‘under-estimated’