Facebook 'must share information' on Russian interference in UK

Social network is urged to reveal what it knows as expert says it is unlikely Russian professional trolls only used Twitter

Facebook is under pressure from academics and parliamentarians to reveal what it knows about Russian attempts to manipulate British politics, as research efforts flounder against the company's locked-down social network.

"Facebook has been very silent on this," said the Liberal Democrat Brexit spokesperson Tom Brake. He said representatives of all major social media companies should be called before MPs "to explain what research they have undertaken into possible Russian manipulation of their sites".