The government must go further to avoid a repeat of the failures made after major disasters like Hillsborough, MPs and peers have warned.
A report into calls for a dedicated Hillsborough Law recommended a statutory duty of candour for all public bodies.
The report, published by Parliament's Joint Committee on Human Rights (JCHR), found "institutional defensiveness" remained a problem.
Campaigners want new legislation to prevent future traumas and injustices of the kind experienced by families of the 97 Liverpool fans who died following the 1989 Hillsborough tragedy.
'Shameful'
It would include a legal duty of candour, guaranteed legal funding for bereaved families at inquests and inquiries and an independent public advocate.