Who will paint Serota?

The National Portrait Gallery in London is commissioning a
portrait of Nicholas Serota, who steps down as director of the Tate at the end of
May. Selecting the artist will only take place after he leaves and has a little
more time. Unlike most eminent figures who are immortalised for the gallery,
Serota knows hundreds of portraitists and will have his own views on who might
be appropriate. For the chosen artist, it will be a slightly intimidating
prospect to have to capture the features an