She said the findings of the 2012 Hillsborough Independent Panel and the fresh inquests were “unequivocal”.

“This was not a ‘swift and sudden death’ for Sarah and Victoria – far from it.

“For an agonising hour they suffered prolonged pain and suffering and yet the formal legal record remains unchanged.

“That cannot be right and we are determined to set the record straight.”

Jenni said that for herself and Trevor, this was the “last thing we can do in a legal court” for their children.

But she added: “This is not just about correcting it for our beautiful daughters, it’s for everyone who died that day, and for other families that find themselves facing similar injustices and incorrect legal records.”

Poultney said the “serious errors and mistakes” of her force had led to “lives being lost” and were a source of “tremendous regret”.

“I acknowledge the huge distress that must have been caused to Mr and Mrs Hicks and others by the court’s findings and further to that, I recognise that the lack of an available route to challenge findings has compounded distress.

“I wish Mr and Mrs Hicks the best for the parliamentary event.”