Painting found

A portrait believed to be of Mary, Queen of Scots has been found beneath a 16th Century painting.

The drawing was revealed in an X-ray of the 1589 portrait of Sir John Maitland, Lord Chancellor of Scotland.

The painting was done by Adrian Vanson, a portrait artist for Mary's son King James VI, two years after she was executed.

The portrait and X-ray images will be on display at the Scottish National Portrait Gallery from Saturday.