UK - Nikolai Glushkov, Russian businessman, suspicious death, London, 12 March 2018

[FrostOwl]

Nikolai Glushkov, a Russian businessman, and Putin critic, was found dead under suspicious circumstances in his London home on March 12, 2018.
Who was Russian businessman Nikolai Glushkov?
Now, on April 9, 2021 a coroner has ruled his death as strangulation by "third-party involvement".
Nikolai Glushkov: Putin critic 'strangled in London home by third party'

Mr Glushkov was a close friend of Boris Berezovsky, another Putin critic, who was found hanged in his home in Berkshire in 2013.
Russian tycoon Boris Berezovsky found dead at his UK home