Prince Charles 'incredibly driven to do his duty'

Princes William and Harry have been speaking about their father, Prince Charles, and what motivates him in his work for The Prince's Trust.

As part of a documentary about the charity for ITV, the princes told presenters Ant and Dec that they often turned to him for help and advice.

When Ant & Dec Met The Prince: 40 Years of The Prince's Trust, will be broadcast on Monday 4th January, 9.00pm, ITV