Facebook’s spokesperson, Nick Clegg, says he has found no evidence of a significant attempt by “outside forces” to sway the Brexit referendum. The former party leader of the Liberal Democrats also argued that Cambridge Analytica had little to do with the EU referendum result.

“We have found no evidence of a significant attempt by outside forces” to sway the vote, Clegg said.

Clegg, who served as deputy prime minister during the first David Cameron cabinet, and an ardent anti-Brexit campaigner...