Novelist Mark Haddon has won the best book prize at the South Bank Show awards given by the ITV1 arts series.
Haddon's book has imprint one for teenagers and one for adults
It was the second major award for his children's murder mystery The Curious Incident of the Dog in the Night-Time.
Earlier this month Haddon won the Whitbread Novel Award 2004 for his story of a boy investigating the death of a neighbour's dog.
The South Bank TV award went to Stephen Poliakoff's BBC drama The Lost Prince, while Blur won the pop music prize.
South Bank winners
Best theatre - Democracy
Best artist - Chris Ofili
Best dance - Russell Maliphant
Best comedy - Eddie Izzard
Outstanding achievement - Dame Helen Mirren
The best cinema award went to Michael Winterbottom's In This World, the tale
of two Afghan boys who escape from a refugee camp in Pakistan and head for
Britain with the aid of people smugglers.
Calendar Girls star Dame Helen Mirren accepted the outstanding
Eddie Izzard won best comedy for his Sexie world tour.
The best theatre award went to Michael Frayn's Democracy at the National Theatre.
Chris Ofili won best artist for his work at the Venice Biennale, and Scottish
Opera's staging of Wagner's The Ring Cycle won the opera award.
Other winners were Russell Maliphant for best dance, and Sir Colin Davis with the London Symphony Orchestra for best classical music, awarded for their
performance of The Berlioz Odyssey at the Barbican.
The awards, hosted by the show's presenter Melvyn Bragg, were held at the Savoy Hotel in central London.
Set up to honour the best of British arts, they are now in their eighth year.