THE parents of a 15-year-old girl who overdosed on ecstasy have blamed the university lecturer who owned the drugs and allowed an unsupervised party in his home for her death.

Patrick Reilly and Lynne Jones said they would not have allowed Isobel Reilly go to the house party in North Kensington in April 2011 where she died, if they had known Brian Dodgeon and partner Angela Hadjipateras would not be there.

Isobel, of Ramsay Road, Acton, was one of four teenagers who took pills after finding a hidden stash of party drugs, including ecstasy, ketamine and LSD, concealed in an unlocked tin within Dodgeon’s bedroom wardrobe.

Westminster Coroner’s Court heard that Isobel died after ingesting two uncut ecstasy tablets and her temperature shot up to 41.7C.

Coroner Dr Fiona Wilcox recorded a narrative verdict at an inquest on Thursday August 1 saying the teenager’s was ‘a tragic and preventable death’.

She said: "No help was sort through the lack of adult supervision until Isobel collapsed and the opportunity to deliver life-saving treatment was lost. Despite the many CPR attempts by paramedics, her life could not be saved. To allow the stash of drugs to be unsecured and the party unsupervised were both serious failures on the part of Brian Dodgeon and Angela Hadjipateras and led to the death."

Ms Wilcox told an earlier hearing on Tuesday, that Mr Dodgeon no longer faced manslaughter charges in relation to Isobel’s death after referring the case to the Crown Prosecution Service a year ago. She could not record a verdict of gross negligence or neglect because the couple had called to check up on the party at midnight and had asked a neighbour to be on call in an emergency.

Isobel’s parents Patrick Reilly and Lynne Jones said the death of their ‘lovely, warm, friendly and open child’ has ‘left a void’ in their lives.

In a statement they said: "We hold Mr Dodgeon and Ms Hadjipateras responsible for the death of our only daughter, Isobel. They knowingly left a party of 14 and 15-year-olds all night, with a substantial quantity of Class A drugs in an unlocked cupboard. We thought Isobel was in a safe place, somewhere she had stayed before and we would not have let her go if we had known it was to be unsupervised. What is so painful for us was to learn that if a responsible adult had been there to call an ambulance early enough, Isobel’s life could have been saved."

Dr Avalon Fey Probst, a consultant in accident and emergency care at Charing Cross Hospital, told the court had Isobel been treated earlier for hypothermia it was ‘highly likely’ she could have survived.

Dodgeon, 62, who was later suspended from the University of London’s Institute of Education, was on holiday when the verdict was heard, after the previous hearing overran. He was sentenced to eight months in prison, suspended for two years, for possessing Class A drugs in December 2011. A week later, he tried to commit suicide.

Giving evidence on Tuesday (July 30), Mr Dodgeon said he was ‘terribly sorry’ for keeping the drugs and for allowing the unsupervised party.