The Russian billionaire investor and owner of English soccer club Chelsea FC purchased this house in 2011 for £25 million.
http://www.thelondonmagazine.co.uk/London-Living/More-London-Living/Cheyne-reaction.html
http://www.costar.co.uk/en/assets/news/2013/February/Abramovich-wins-three-year-planning-battle-for-100m-home/