Saatchi: 'I have never seen evidence Nigella took drugs'

Charles Saatchi has told a court he has "no proof" his ex-wife Nigella Lawson ever took drugs, despite an email he sent claiming she was "off her head".

He was giving evidence at the trial of the couple's assistants Francesca and Elisabetta Grillo who deny fraudulently using their employers' credit cards.

Sangita Myska reports.