The National Gallery is dusting off some of its most embarrassing acquisitions for a new exhibition looking at fake artworks.

Close Examination will display works of art that have been quietly removed from view after research showed they were not what they were thought to be.

They include works supposedly by Sandro Botticelli and Hans Holbein which were mistakenly thought to be genuine.

More than 40 works of art will go on display at the gallery in June.