4. There was an undeniable “catastrophic breakdown in communication” within the emergency services

Some of the most shocking facts to come out of the Panorama episode are those surrounding the response times after the bombing. These details form the basis of Saffie’s family’s search for answers because they believe that the outcome could have been different if appropriate systems were in place.

Only three paramedics made it into the blast zone and it was two hours before the fire service arrived – after the last casualty had been taken out of the arena. The solicitor for the Roussos family, Nicola Brook, explains that the eight-year-old was conscious for an hour – “she was able to talk, ask questions” – but her bleeding was “not noticed” and was allowed to continue, which led to her body shutting down.

“The basic medical techniques that could and should have been used weren’t,” she explains.

The documentary also explores the “breakdown in communication between the emergency services” which led to “arena workers and members of the public [who] were left to help the injured inside the foyer.”

While there was a “catastrophic breakdown in communication” within the Greater Manchester police force, Andrew doesn’t necessarily want to blame people, he simply wants to “scrutinise everybody to the point of getting to the truth”.

BBC One’s Panorama: 5 important things we learned from the harrowing documentary about the Manchester Arena bombing