An abuse charity is calling for legislation to make it a criminal offence to fail to report suspected or known abuse.
Pete Saunders of The National Association for People Abused in Childhood (Napac) said:
Mandatory reporting is long overdue in this country. Parents will probably be shocked to learn that that such legislation does not already exist.
Staff who suspect abuse may report it, but face no sanction for failing to report.
More top news
Police have offered legal advice to anyone who spots a dog trapped in a hot car - including on whether they can smash the windows or not.
Sir Nicholas Winton, who rescued 669 children from the Nazis, didn't tell anyone about his exploits for 50 years - not even his wife.
Police believe one of the West's most infamous criminals, timeshare fraudster John Palmer, was murdered.