“I don’t think it’s even possible to describe all the feelings and emotions that go through your system when something like this happens.”
No arrests have been made since Scotland Yard launched a murder probe four days after the businessman’s body was found.
Miss Glushkova, who is “haunted” by her father’s death, said it was “literally devastating” to not know what happened as she urged people to “care and spend time with the ones they love, as much as they can, and never think there is a tomorrow for somebody they care about”.
Her father had made enemies in the Kremlin after clamping down on corruption at Aeroflot and had been arrested in Moscow shortly after Mr Berezovsky, who had had financial control of the airline, fell out with Mr Putin in 2000 and fled Russia.
Mr Glushkov escaped prison in 2004 and was granted asylum in London where he became part of a close-knit circle of Putin critics.
Mr Berezovsky was found hanged in the bathroom of his Surrey home in 2013, but Mr Glushkov never accepted the official explanation that it was a suicide.
Detectives investigating Mr Glushkov’s murder have contacted more than 1,800 witnesses, viewed 2,200 hours of CCTV footage and collected 1,200 exhibits during their investigation.