Unison general secretary Dave Prentis today welcomed the the publication of the Hillsborough disaster files and said he hoped they would give grieving relatives some relief.
He also warned that the lessons must never be forgotten.
Speaking from the TUC conference in Brighton, Mr Prentis said that "never again should grieving relatives be left to live through the nightmare of not knowing the truth.
"It has been cruel and inhumane that they have had to fight to get the truth of what happened to their loved ones.
"We hope that releasing the files will ease their suffering and help to bring some closure. And there is now absolutely no excuse to delay further inquests into the remaining victims."