HARDtalk - Anish Kapoor

Anish Kapoor is one of the world's most celebrated living artists and his Cloud Gate sculpture in Chicago is one of the most expensive pieces of public art in the world. His latest show at the Royal Academy of Arts in London has drawn favourable reviews but some critics have dismissed Kapoor as pretentious. How does he respond to such criticism and what fuels his prolific artistic output? Anish Kapoor talks to Stephen Sackur at his studio in south London.