Manchester's Whitworth Art Gallery 'doubles in size'

The Whitworth Art Gallery in Manchester has been unveiled after a £15m revamp which has seen it double in size.

The 125-year-old gallery, which includes works by Vincent van Gogh, Pablo Picasso and J. M. W. Turner, has been closed for 16 months during the development.

BBC North West Tonight has been given a preview of the site before it opens to the public on Saturday.