There is heightened scrutiny over the origin of the documents – the legitimacy of which has not been called into question – after Reddit said on Friday it believed they had been leaked and then posted by an account which was part of a dubious campaign reported to have originated in Russia. But Corbyn refused to say how he obtained the documents and dismissed a suggestion that Labour had benefitted from a Russian trolling operation.
“This is such nonsense,” he said on Saturday at a zero-waste shop in Barry, Wales. “This is such an advanced state of rather belated conspiracy theories by the prime minister. When we released the documents, at no stage did the prime minister or anybody deny that those documents were real, deny the arguments that we put forward.
“We obtained those documents. We believed those documents to be correct and nobody until yesterday denied the correctness of those documents. The issue is there should be no interference in British politics by anybody else.
He added: “The prime minister has answers to give, which he refuses to do, about Russian donations to the Tory party or the report that he is sitting on about Russian interference in British politics. Of course there should be no interference in our British political system by Donald Trump or the Russians.”
Johnson said on Saturday that the source of the documents must be established. “Well I do think we need to get to the bottom of that,” he told Sky, from the side of a football pitch near Stockport.
“As far as I’m aware we haven’t yet established the truth about that. But what I certainly think is that document, whatever it was intended to prove, did not prove what Jeremy Corbyn and the Labour party hoped that it would prove. And I’m afraid it was just another distraction.”