Mr Corbyn faced the wrath of an array of interviewers over the so-called “leaked” documents. Most notably was BBC presenter Andrew Neil who quizzed him on the legitimacy of them. Though on Saturday, Sky News also pressed him on the issue, though this time on the Northern Ireland documents brandished this week that he claims prove there will be customs checks at the Irish border.
Again, Mr Corbyn refused to reveal the source of the documents.
Express.co.uk is asking in an exclusive poll whether you think they are real.
Mr Corbyn has repeatedly insisted during the election 2019 campaign the Tories are planning to sell off the NHS to the US as part of a post-Brexit trade deal.
The claim has been refuted by Donald Trump and Boris Johnson.
But Mr Corbyn claims to have documents which prove the health service would be “on the table” in trade talks.
This weekend the source of the papers has been called into question after details emerged on social media platform Reddit suggesting they had links to a nefarious Russian misinformation campaign.
Mr Corny was yesterday asked: “What we are dealing with here is the possibility of Russian interference. It is not the Tories saying those documents were amplified on social media by a Russian trolling group.
“It is Reddit now. And you have got those documents and you haven’t told us what the source is. Where did you get them from?”
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“About Russian donations to the Tory Party or the report that he is sitting on about Russian interference in British politics.
“And of course there should be no interference into our British political system by Donald Trump or the Russians.”
Earlier in the Sky News interview, Mr Corbyn was unequivocal in his condemnation of the allegations of a Russia link.
He said: “This is such nonsense. 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.”
On the links to Russia Reddit said it had banned 61 accounts following an investigation of suspicious activity.
The campaign shared the same pattern of activity as a Russian operation dubbed “Secondary Infektion” uncovered by Facebook earlier this year.