The Russian banker, who was shot outside his flat in East London, says he thinks he knows who tried to kill him.
In an interview with the Mail on Sunday, German Gorbuntsov claimed that four former business associates were behind the attack near Canary Wharf in March.
The 45-year-old told the paper that they ordered his assassination after they found out he was about to give a formal witness statement about the attempted murder of another financier in Moscow.
He said: "I believe that the assassination attack on me was organised by the same group of people that four years ago was behind a raid on my assets.
"The main argument, proving their involvement is this: they are the only ones with a serious motive.
"I simply have no one else who would want me to be dead."
The men he named are understood to deny the claims and no arrests have been made over the attack.
Mr Gorbuntsov, who is still in a stable condition in hospital, said the attack had changed the way he felt about living in the capital.
He said: "Life here made me relaxed, I felt safe. But there is no absolute security in London."
Scotland Yard is liaising with Russian police for the first time on a major criminal inquiry since the diplomatic fallout over the death of dissident Alexander Litvinenko.
Police have released CCTV stills of the man suspected of shooting the former Russian banker German Gorbuntsov on March 20th. The pictures were taken in Manilla Street in east London. A gun, a hooded top and a bag were discovered nearby. Mr Gorbuntsov remains in hospital after the shooting.
The wife of a former Russian banker, who was shot several times in Canary Wharf last week, has appealed for information to help find his attacker.
German Gorbuntsov was gunned down in a supected assassination attempt and is now under armed guard in hospital. His condition is described as "critical but stable".
Lorissa Gorbuntsov said:
"This is a very emotional and complicated time for us. I would like to firstly thank everyone who is currently helping and supporting us, especially the Metropolitan Police.
"Their support has been of the highest standard.
"We as a family would like to appeal for any person, in this country or outside the UK, to come forward and provide the police with any information which will assist in the capture of the person or persons behind the attempted murder of my husband German.
"This is an act of pure unexpected violence, which should be treated as so.
"Please come forward so that justice can prevail."
Police investigating the shooting of the former Russian banker German Gorbuntsov are seeking the driver of a taxi which transported him to Byng Street shortly before the attack.
It is believed that the taxi dropped him off shortly before 7:30 on Tuesday evening.
The 45-year-old Russian national was shot on Tuesday evening as he entered a block of flats. Police are looking for a white, six foot tall man of slim build. He was wearing a dark hooded top and seen running away from the scene on Byng Street.
Mr Gorbuntsov remains in a stable but critical condition in hospital. There has been no arrest at this time and enquiries continue.
German Gorbuntsov is under armed guard after being shot as he entered his multimillion-pound executive apartment in Canary Wharf on Tuesday. Police say suspect, who is white, 6ft and slim, and was wearing dark clothes, was seen running away from Westferry Road after Mr Gorbuntsov was shot.
Reports in Russia said that the shooting of Mr Gorbuntsov may be linked to a 2009 investigation into a murder attempt on another Russian banker, Alexander Antonov, in Moscow. Scotland Yard said it was "too early to speculate".