A Russian businessman found dead in an exclusive Weybridge estate last year did not die in suspicious circumstances, police have said.

After a lengthy investigation following Alexander Perepilichnyy’s death on November 10 last year, Surrey Police said they were “satisfied that there are no suspicious circumstances surrounding the death”.

The death of the 44-year-old has now been formally passed to the coroner and an inquest will be held in due course.

Mr Perepilichnyy, who lived in Granville Close, was found collapsed in Granville Road on the St George's Hill estate at 5.15pm on November 10.

South East Coast Ambulance attended but Mr Perepilichnyy was pronounced dead less than half an hour later.

Two post mortem examinations were carried out, on November 14 and November 30, but they did not find a cause of death. Toxicology samples were taken in both post mortem examinations and were used for a full range of tests, police said.

Detective chief Inspector Ian Pollard, senior investigating officer, said: “I am satisfied that following extensive enquiries, including a post mortem examination carried out by a Home Office pathologist, and a full and detailed range of toxicology tests, there is no evidence to suggest that there was any third party involvement in Mr Perepilichnyy's death.

“I appreciate that there has been some frustration around the length of time required to complete our enquiries, however my priority as the senior investigating officer for this investigation has always been to his family and to HM Coroner for Surrey.

“Although the results of the toxicology tests are now known, the circumstances around Mr Perepilichnyy's death will now be the subject of an inquest.

“This was a tragic and sudden death which attracted intense media speculation. Mr Perepilichnyy's family has had to endure this media attention at the same time as coping with the loss of a loved one, and our thoughts remain with them at this time.”

It was reported at the time of his death that Mr Perepilichnyy had moved to Britain three years ago after an alleged falling out with a Moscow crime syndicate.

It emerged after his death that he was helping Swiss authorities in a major corruption investigation.

Mr Perepilichnny also provided evidence against those linked to the 2009 death of anti-corruption lawyer Sergei Magnitsky.