Police officers and civil servants could be subject to a new "duty of candour" under a "Hillsborough amendment" passed by Labour.
The amendment, which was added to the Police, Crime, Sentencing and Courts Bill in the face of government opposition, would require the police to "act at all times in the public interest and with transparency, candour and frankness and to assist in court proceedings, official inquiries and investigations".
The amendment was passed by 252 to 179 votes in the House of Lords, but the government could still overturn the move when the Bill returns to the House of Commons for further scrutiny.
