The South London Coroner is to write to the Prime Minister to urge the Government to ban overseas-based websites assisting suicide, after a chef trained by Jamie Oliver was found dead after buying a suicide kit online.

Kevin Boyle of Old Lodge Lane, Purley, was reported missing on October 12, 2011 and the 26-year-olds body was discovered three months later at the bottom of a garden in Coulsdon bordering Farthing Downs.

The inquest into his death today heard a pathologist was unable to give a cause of death, but apparatus was found near to where his body was discovered, which led to a suspicion Mr Boyle may have killed himself.

Croydon Coroners Court heard notes were also found close to his body for family and friends which gave an indication of his intentions.

But Coroner Dr Roy Palmer recorded an open verdict, stating he "could not be sure beyond reasonable doubt he intended to take his own life."

Since her son's death Mr Boyle's mother, Patti has campaigned to have overseas-based websites assisting suicide closed down after discovering her son had received a suicide kit he had ordered online from a company that promised painless 'deliverance' on the day he went missing.

Mrs Boyle urged Dr Palmer to make a ruling under Rule 43 of the Coroners Rules, which would ask the Prime Minister to consider what action could be taken to prevent future deaths.

The 55-year-old said tangible and circumstantial evidence led her to believe Kevin committed suicide.

It is believed he gassed himself with equipment bought on the internet.

She said: "We have the email exchanges ordering the kit and arranging payment.

"Kevin's father took delivery of the kit, I saw the brown Jiffy bag I believe contained the kit addressed to Kevin, that bore no postage details or delivery identification delivered by an unidentifiable courier.

"Paraphernalia consistent with these items was retrieved by officers inspecting the site where Kevin was discovered."

After hearing from Mrs Boyle, Dr Palmer said he would take time to consider what to put in his letter, which he would send to the Prime Minister's Office.

He said: "I am slightly minded to write to the office of the Prime Minister as this crosses a number of Government Offices. I hope some good will come of it, the internet is a creature that has grown and has really grown out of control."

Speaking after the inquest, Mrs Boyle said Dr Palmer's ruling had given her hope and revealed a charity called Kevoirdo's Big Love had been set up in her son's memory.

She said: "The primary aim of Kevoirdo's Big Love is to reduce the risk of suicide in anybody in mental distress, but we do have a particular concern that 12 men a day are committing suicide."

Paying tribute to her son who at the age of just 16 became the youngest of Jamie Oliver's apprentices at his restaurant Fifteen, Mrs Boyle added: "He wanted to be a chef from the age of four.

"When he was selected for the Jamie Oliver it was all his dreams coming true. Jamie Oliver, his team and everybody at Fifteen have been a constant support for us as a family.

"Bearing in mind he was my son's employer, mentor and friend there was no reason for them to take us all under their wing."