BBC denies cover-up of Savile 'abuse'

He was a British institution, a flamboyant TV host who raised millions for charity. But a year after his death, Jimmy Savile's reputation has been destroyed by a series of allegations of sex abuse. And the company he worked for, the BBC, has been forced to defend itself against accusations that it tried to cover up the scandal. In December it decided not to broadcast an investigation into the charges. Al Jazeera's Tim Friend reports from London.