Nigella Lawson
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Nigella Lawson flanked by police for court arrival

4 December 2013 Last updated at 10:25 GMT

Nigella Lawson has arrived at court to give evidence at the trial of two of her former personal assistants who are accused of fraud.

The celebrity chef was flanked by a large group of police officers as she arrived at Isleworth Crown Court on Tuesday.

Francesca and Elisabetta Grillo deny fraudulently using company credit cards to spend up to £300,000 on luxuries, including designer clothes and first-class air travel between 2008 and 2012.