Yes it is a small exhibit but don't think whizzing round in 15 mins does it justice. I spent a good hour and thoroughly enjoyed it.
The Queen: Art and Image
National Portrait Gallery
Until Sat Aug 25 2012
© National Portrait Gallery London
Time Out says
Posted: Wed Jan 19 2011
Portraits of the Queen to celebrate her diamond jubilee. Spanning the 60 years of her reign, the portraits range from formal, official paintings and photographs to responses by contemporary artists. Included are works by Cecil Beaton, Lucian Freud, Andy Warhol, Annie Leibovitz, Gilbert and George, and Gerhard Richter.