article_snippet.sent: Fay Maxted, chief executive of the Survivors Trust, which represents more than 130 rape and sexual violence charities, said: 'Under-reporting is a real problem in sexual offence cases. '
article_snippet.sent: A police watchdog recently found a fifth of crimes were not being logged properly.
article_snippet.sent: The survey, which looks at people's experiences of crimes, includes incidents not reported to police.
article_snippet.sent: But some crimes, such as bank and credit card frauds, are left out, distorting the true rate of offending.