Nick Braley, who was a teenage student at the time, said that when he told West Midlands officers three weeks later that South Yorkshire police failings had caused the disaster, he was told he could face prosecution.

'Scared, traumatised'
He says he was "scared and intimidated" by a West Midlands officer.

"I'm a 19-year-old boy, three weeks out of Hillsborough, traumatised, and he's threatening me that he's going to put together a case for wasting police time because he didn't like my evidence," he says.

Newsnight has found that his experience is typical of those cited by a number of Hillsborough survivors.