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A teenager died after taking a cocktail of drugs including heroin and cocaine, a coroner ruled
William Wilson, 19, was also found to have cannabis in his system plus prescribed medications such as diazepam, codeine and ketamine.
Kate Thomas, assistant coroner for Central and South East Kent, said in her conclusion: "He died as a result of taking a combination of these drugs, which he did of his own volition.
"There is no evidence that he intended to take his own life, He did this unintentionally and collapsed,"
Ms Thomas recorded this as a drug-related death.
Mr Wilson was found dead at his flat in Dover last December, the inquest at the Archbishop's Palace in Maidstone was told.
Det Con Jessica Wilson (not related) explained to the court that the ambulance service has been called to the property at 11am on Friday, December 27, and paramedics tried to revive him.
They contacted police when they had suspicions that this was a drugs death.
DC Wilson said that a man who had also been at the flat had also tried to revive him.
He called the ambulance but left by the time police arrived.
He was traced by officers and interviewed on December 30 but gave no comment answers.
But this witness, who was not named at the inquest, did tell police that he had briefly left Mr Wilson to go to the shops and found him no longer breathing on his return,
DC Wilson said police made inquiries including door-to-door.
From speaking to witnesses they believed that Mr Wilson had got the heroin from two men who had earlier come to the flat.
These men, said to have arrived in a Mercedes car, still remain unidentified, DC Wilson told the court.
She added that drugs paraphernalia had been found at the flat such as a cannabis grinder, weighing scales and needles.
DC Wilson also said that the victim was not known to police as a drug user or dealer.
There were no signs of violence in the flat such as overturned furniture, she added.
The inquest also heard that there were no signs of trauma in the body and third party involvement in the death was ruled out.
The substances found in Mr Wilson's body followed a toxicology examination by forensic scientist Sophie Jones.
She believed that Mr Wilson was not under the influence of alcohol as very low levels were found in his system.
That can anyway be produced in the body on death, the inquest heard.
Drugs such as ketamine were estimated to have been taken within 12 hours of Mr Wilson's death but ecstasy, a small dose, was not taken recently.
The pathology report concluded that Mr Wilson died of mixed drug intoxication.
After the hearing Mr Wilson's family told KentOnline he was a cashier for the Travelex bureau de change on DFDS ferries.
He lived in Clarendon Place on the corner with Malvern Road.
Mr Wilson grew up mainly in Castle Avenue, Dover, and was a pupil at the town's St Edmund's RC School.
His mother, Caroline Wilson, said he suffered from fibromyalgia, a condition that causes widespread pain and extreme tiredness.
"He was in so much pain and took painkillers for that. We also knew he was a recreational user of cannabis but we didn't know he took hard drugs.
"It was a one-off.
"We found from the post-mortem that he had taken small amounts of drugs but they combined to be fatal."
Codeine and ketamine are used for pain relief.
Mrs Wilson added: "He was loved by everybody and had a heart of gold. He was a smashing boy. He had so many plans but his life was cut so short."
Mr Wilson's other family included his sister Amy Hicklin and twin brother Harrison Wilson.
Family and friends gathered outside Mr Wilson's home in a vigil days after the tragedy.
This was in the first hour of New Year's Day 2020 and included a minute's silence and floral tributes.
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