In his final moments, Henry Nowak told police officers nine times “I can’t breathe” and four times that he had been stabbed.In response police officer dragged him across the gravel, handcuffed and read him his rights. It was the last thing Henry heard before he died.

The 18-year-old bled to death last December after being handcuffed by officers who believed claims by his Sikh killer, 23-year-old Vickrum Digwa, that he had racially abused him.

In body-worn camera footage an officer replies: ‘You’ve been stabbed? Whereabouts? Don’t think you have, mate’