The inquest into the deaths of Kieran Naylor, 33, and Rebecca Foster, 32, from Daresbury in Cheshire, heard that the blaze was so fierce that its cause still cannot be identified.

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Five fire engines were called to the property on December 12 2022, along with cops and paramedics.

Emergency services reported the detached house being ‘well ablaze’ on arrival, with flames in the front right window of the ground floor and smoke to the upper floor.

Six firefighters wearing breathing apparatus tackled the fire with four hose reel jets – and rescued Kieran and Rebecca, who were rushed to hospital in a critical condition.

Rebecca Foster died at 7.22pm the following day, December 13.

Two weeks later, at 8.45pm on Boxing Day, Kieran Naylor also died as a result of his injuries sustained in the fire.

Rebecca’s father John Foster said: “They were massively in love and spent all of their time together. She was his world.

“This was the fourth house they were renovating together and it was meant to be their forever home.

“They had a cat and a dog who were like their children.”

The engaged couple had been together for 10 years and were due to be married in Cyprus in 2024.

Alexander Frodsham, assistant coroner for Cheshire, said: “An investigation eliminated the possibility of suspicious or third party activity, and an investigation report focuses on the likely ignition source.

“Unfortunately, the investigation has been hampered by the sheer scale of damage, and the property remaining unable to enter.

“If investigators could enter, it may still not be possible to identify what caused the fire.

“The most probable cause cannot be ascertained, but I accept the evidence that the fire is likely to have started in either the lounge or games room.

“I understand the uncertainty will be disappointing for the families.”

For Rebecca, Coroner Frodsham concluded: “Rebecca died as a result of injuries sustained as a result of a fire at her home.

“The cause of the fire cannot be identified.

“The medical cause of death is hypoxic brain injury secondary to smoke inhalation.

For Kieran, he said: “Kieran died as a result of multiple organ failure secondary to burn injuries after a fire at his home.

“The cause of the fire cannot be identified.”

Coroner Frodsham added: “Once again, I express my sincere condolences to both families for your ad loss.

“It must have been quite a shock.

“I am very sorry this happened to you, and I hope you got some answers, albeit limited answers, by the process today.”