A British fitness instructor passed out and died of a drugs overdose while alone for 30 hours with two men in the private room of a strip club where she worked in Australia, an inquest in England has heard.

But neither man, Joseph Berhe and Tomas Mesfun, called an ambulance or tried to assist Stacey Tierney, 29, while they were in the room at Dreams club in Melbourne, the only part of the club not covered by CCTV, Stockport Coroner's Court heard on Friday.

Ms Tierney, from Manchester, was at an "after party" in the management offices of the club where she worked while travelling in Australia and saving to study nursing.

Stacey Tierney died of a drug overdose in a Melbourne strip club.

A combination of drug toxicity from alcohol, heroin, ecstasy and cocaine caused her death, the coroner ruled.

Both Mr Berhe and Mr Mesfun were arrested as suspects by Victoria Police and gave "inconsistent" accounts but neither have been prosecuted over her death, the inquest heard.

Stacey Tierney. (Facebook)

The private room was used for parties after the club closed and had been "cleaned up" by the time police were called.

Both men told detectives they were sleeping themselves but this was contradicted by phone records and text messages, one saying: "This chick's passed out."

Alison Mutch, senior coroner for South Manchester, recorded an open verdict into Ms Tierney's death, saying there was still "unanswered questions" about what happened for a long period of time shortly before her death.

Ms Tierney's tearful mother and other family members demanded to know why no help was called.

Ms Tierney had first travelled to Australia in 2014 with her boyfriend and returned a year later. She started to work at the club in November 2016.

Although she did not like the work, the money was good and she had gained a study visa to save up to pay for a nursing studies course, the court heard.

Detective Superintendent Estelle Mathieson, from Greater Manchester Police, said Ms Tierney began her shift at the club around 8.30pm on Saturday, December 17, 2016.

She is seen on CCTV working normally and "does not appear to be overly intoxicated", the officer said.

Stacey Tierney. (Facebook)

The last time she was seen alive was at 3.41am in the early hours of the next day, going into the management offices for the after party.

Six people were present but another woman, the bar manager and his friend left, leaving Ms Tierney with Mr Berhe and Mr Mesfun, the court heard.

Supt Mathieson said both men later said they were on drink and drugs and asleep most of the time.

She added: "However phone records show that is not the case. We can't account for what happened in that room."

At 12.30am on Monday, the following day, a text message was sent to the bar manager by one of the men saying: "This chick's passed out and I can't leave her. She's scaring me."

Around 5.30am a second message read: "I don't know what to do any more."

A pathology report concluded Ms Tierney died around 5.30am on Monday.

Another six hours passed before bar owner, Steve Kyriacou, arrived at 11.43am to find Mr Berhe and Mr Mesfun along with Ms Tierney's lifeless body on a sofa and emergency services were called.

Supt Mathieson told the coroner Australian police were unable to prove a criminal offence had been committed.