The Sherlock Holmes and 12 Years a Slave actor let the world know that he was off the market the old-fashioned way: In the births, deaths and marriages column of The Times.
Cumberbatch, 38, who is currently starring with Keira Knightley in the biopic of wartime codebreaker Alan Turing, The Imitation Game, is to wed theater director and actress Sophie Hunter, 36.
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No date has been given for the wedding, but for fans of the actor around the world, the news comes just weeks after other leading bachelors George Clooney and Brad Pitt walked down the aisle.
The couple are reported to have met during the making of the movie about naturalist Charles Darwin, Burlesque Fairytales, in 2009.
Cumberbatch's rep had no more details but did add, "I am delighted to confirm this morning’s announcement that Benedict Cumberbatch and Sophie Hunter are engaged."