Cambridge Analytica boss denies working on Brexit campaign

The chief executive of the big data marketing firm Cambridge Analytica has denied claims by a prominent Brexiter that his company worked on a pro-leave campaign during a tense hearing in front of a House of Commons committee.Alexander Nix told the digital, culture, media and sport committee inquiry into fake news that Cambridge Analytica had never worked on the Brexit referendum, despite claims that it had partnered with Leave.EU, the unofficial pro-Brexit campaign co-founded by Arron Banks.