They might bury an apology somewhere in the paper or online. But I don't think they would ever admit on a front page that their story was not correct and their insinuations were wrong and actually harmful to a person.
This is not about Harriet Harman - although that's part of it. All the stories the DM have fabricated, exaggerated or got wrong which have caused real harm to real people and groups. That have stirred the fans of hate.
All to sell papers.