Only 17.7% of NHS trusts were given a 'good' rating for their culture of reporting safety concerns, according to figures on the new government web page devoted to patient safety.
The majority of trusts (61.7%) were rated 'OK', while 20.6% were described as "poor" at reporting safety issues such as understaffing on wards.
A Department of Health spokeswoman made clear that a 'poor' rating' did not mean a deliberate 'cover-up' but could be down to "many reasons".
More top news
Joshua James, 23, is accused of hurling the three-and-a-half foot reptile at staff at a Wendy's drive-thru in Florida in October.
A team of MPs have battered journalists including ITV News' Alastair Stewart in an annual charity pancake race.
Labour can make a collective decision on whether to back renewal of Britain's nuclear deterrent, the shadow defence secretary said.