Sadiq Khan says hundreds of thousands spent on anti-Ulez Twitter manipulation

Mayor of London expected to tell social media firms of campaign and urge them to bear down on the attempts to distort truth'

Sadiq Khan is expected to claim that hundreds of thousands of dollars" were spent on an anti-Ulez online manipulation campaign on Twitter, citing research conducted after Labour's unexpected Uxbridge byelection defeat.

The London mayor, who will speak at a conference in New York on Tuesday, said he feared that disinformation and manipulation campaigns were spreading apace" but it was not always clear who was behind them.