BREAKING: Brittany Kaiser's written evidence has explosive new claims about Breitbart's relationship with Cambridge Analytica. Company had "exclusive rights to re-sell Breitbart engagement data". Steve Bannon key role in both orgs. Major new qs about Bannon & Brexit... pic.twitter.com/RNR9fq1026— Carole Cadwalladr (@carolecadwalla) April 17, 2018