Independent Police Complaints Commission's Deputy Chair Deborah Glass said the Hillsborough announcements were "welcome news", but added:
This is not going to be quick and easy process.
But we now have a clear path ahead with all the investigative and prosecutorial bodies working in a coordinated way to complete the full picture for the families of those who died, those who were injured and those who were traumatised by the terrible events at Hillsborough.
The Hillsborough inquest verdicts of accidental death have been quashed by the High Court and a new police investigation has been announced.
Families of the Hillsborough victims are on their way to London for a historic hearing. They hope to hear the inquest verdicts overturned.