A Treasury spokesman has said that the sale of Northern Rock "represented good value for money."
He said: "We will provide a full response to this report in due course.
"The decision to nationalise Northern Rock in 2008 was taken in the interest of financial stability.
"The sale of Northern Rock plc to Virgin Money last year represented good value for money for the taxpayer, and has helped increase high-street competition."
More top news
Official photos from the royal wedding are used across many of the papers.
MPs say there must be no way back for the former London mayor as he hints he could seek to rejoin the party.
President Donald Trump has requested that the Justice Department investigates whether the FBI infiltrated his campaign.