An American man who set up camp on St James’s Park so he could stay close to the Royal family has been found dead, possibly four years after his death.

Robert James Moore’s remains were discovered on an isolated island in the park by a tree surgeon, Westminster Coroner’s Court heard last week.

Detective Sargeant Mike West, from Marylebone police station, told the inquest: “He had a fixation with the Queen and the Royal family, which takes us back to the place where he was discovered."

“You have actually stated that there would not be a better place to remain undiscovered with view of the Queen’s primary residence than the West Island.”

69 year old Moore, who arrived in the Britain from the US in 2007, reportedly sent hundreds of  letters and packages to the Queen over a 15 year period.

He is believed to have suffered from mental health problems and had been in trouble in the US police for drink-driving.

The inquest heard there was no bridge to the island which was only accessible by boat, swimming or wading.

A post-mortem found no evidence of any trauma or injury, but no cause of death could be recorded as the bones may have been there for three years the  pathologist said.

Moore was identified by documents found in his pockets, including a US passport.

Body of Missing New Zealand man found in the Thames