The reason for the sudden death of a record label manager, aged just 27, remains a mystery.

Callum Davis, of Southfields Way, Harrietsham, was found by police, lying unresponsive on his bedroom floor, on December 29 after his family became worried they hadn’t heard from him.

Pathologist Deirdre McKenna told an inquest last week that she had tested for every possible cause of death, and even sent his heart to be examined by an expert at St George’s Hospital in London, but that no medical explanation had been found.

Family members were concerned Mr Davis had tested positive for Covid-19 three days earlier but Dr McKenna ruled that out. A toxicology analysis had found no drink or drug traces other than a therapeutic level of paracetamol.

Recording a verdict of death by natural causes, Coroner Sonia Hayes expressed her sympathies to the family and said: “I understand you want answers, but there are no more answers to give.”

She said she had recently seen statistics that suggested that nationally as many as 12 people die each week from Sudden Adult Death, and they were nearly always adults under 35 years of age.

Mr Davis worked for the record label Love and Other.

Following his death, friends raised more than £13,000 for a commemorative headstone for him in the Rose Garden, Leatherhead.

This is close to where his family is based.

His girlfriend Harriet Guildford described him as a “beautiful, talented, funny, kind soul”.

“My best friend, my love and the only one who truly understands me.

“You have left a gaping hole in so many people’s lives and there will forever be a part of me missing.”