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
UK airport passengers have to walk up to a kilometer from check-in desks to reach their departure gates, new research has shown.
In an annual survey taken among local authorities in the UK, 2,463 stray dogs were put to sleep between April 2015 and March 2016.
Inspectors found the availability of drugs at HMP Bedford was having a "serious impact" on safety.