Julian Assange, founder of WikiLeaks makes a statement from a balcony of the Ecuador Embassy in London. (AP Photo)
Cumberbatch could be joined onscreen by another British TV favourite, Dan Stevens of Downton Abbey. Stevens is said to be in negotiation for a role as a computer hacker in the film, reports variety.com.
The yet-untitled movie will be produced by Steven Spielberg's DreamWorks.