The son of FIA President Max Mosley died after taking a lethal cocktail of drugs including cocaine, ketamine, MDMA (ecstasy) and heroin or morphine, an inquest has ruled - after it emerged that the 39-year-old had been 'using hard drugs for many years and would often go missing for days at a time'.

Alexander Mosley was found dead in his Notting Hill home on 5 May by his cleaner Samara Fodoti. According to the BBC, the restaurateur was discovered slumped at his desk wearing only his boxer shorts, with blood around his mouth and surrounded by drug-taking paraphernalia.

"I saw him at his desk," she recounted in a statement. "It was obvious he was dead. I screamed his name; I didn't know what to do."

Post-mortem urine tests revealed positive traces of cocaine, ketamine, MDMA (ecstasy) and heroin or morphine, with the cause of death determined to be cocaine intoxication after puncture-type marks were found around Mr Mosley's elbows and groin.

The inquest at Westminster Coroner's Court was told that the son of the head of Formula 1's governing body had begun taking drugs to deal with his inherent shyness, and had admitted his habit to his parents in 1994 before developing a 'long-term' addiction to heroin and crack cocaine.

He was also understood to have been recently treated for depression, and friend and personal assistant Ramona Rainy admitted: "I was aware Al had been using hard drugs for many years and would often go missing for days at a time."

"This is a tragedy for a man who, in so many respects, had so much potential," summed up coroner Dr. Paul Knapman. "Unfortunately, his propensity to return to taking drugs has caused his death at the age of only 39."