Boris Berezovsky is a Russian businessman. According to the Independent, he was seen as "the original oligarch... ..the richest and most influential of Russia's new tycoons, a compulsive networker with fingers in many pies", before he left Russia for exile in the UK in 2000.
25 Grosvenor Street
Berezovsky owns 25 Grosvenor Street in Mayfair, where Polonium traces were found in November 2006 following the death of Alexander Litvinenko. Two British security companies, Titon International and Erinys International rent premises in the building. Erinys subsequently confirmed that Litvinenko had visited its offices.
- Mary Dejevsky, Boris Berezovsky: The first oligarch, The Independent, 25 November 2006.
- Radioactive traces found at Berezovsky's office, by Cahal Milmo, Jason Bennetto and Anne Penketh, The Independent, 28 November 2006.
- Radiation traces found in Berezovsky office, by Duncan Gardham Ben Fenton, telegraph.co.uk, 29 November 2006.