Labour leader scores big wins on Twitter and Facebook as Boris Johnson clings on to poll lead ahead of Thursday's election.
There is no suggestion that the content of the documents have been falsified or doctored.
Newsreader Huw Edwards, who also appeared in the ad, said his "thoughts on this kind of stunt are unprintable".
The adverts which have appeared on Facebook include an edited clip of BBC political editor Laura Kuenssberg saying “pointless delay to Brexit”.
Majority of people who shared the NHS campaign video had never shared a Jeremy Corbyn post before.
The Conservative party's tactics in the first election debate show the need for greater scrutiny, says writer Tania Hardcastle.
West Derby candidate accused Baroness Michelle Mone of betraying her working class roots and attacked Esther McVey.
Francesca O’Brien apologises for "unacceptable" comment on Facebook amid calls for her to be removed.
Facebook have taken one picture down, but others remain online.
Digital giant says ads published day snap election was called were about "social issues, elections or politics". Johnson has been accused of misusing public cash for political purposes.