The High Court has ordered a review into the decision not pursue a prosecution over the death of a man who who was restrained by door staff outside a bar.
Julian Webster, 24, from Birmingham, died outside the Pitcher and Piano in Manchester city centre in April 2009.
An inquest said restraint played a significant role in his death
Lord Justice Elias has ordered a review of the Crown Prosecution Service (CPS) decision not to prosecute.
'Justice for Julian'
The family's barrister Rajiv Menon QC told the court the CPS decision was "flawed and irrational".
The court said the review does not automatically mean a prosecution will follow.
Julian's mother Sonia said she was "absolutely overwhelmed".
"I'm so, so happy," she said. "I know it's not the end of the fight but it's great.
"For five years our lives have been put on hold. Justice needs to be done for Julian."
Responding to the ruling, Nazir Afzal, chief crown prosecutor for CPS North West, said: "We will now reflect on the court's decision and carry out a further review of the case.
"Our sympathies remain with Julian Webster's family and friends who have suffered such a sad loss."