NEW : Testimony from Charles Saatchi , Nigella Lawson 's ex-husband , is expected Friday . The court heard that Francesca 's average monthly expenditures were 48,000 pounds and Elisabetta 's were 28,000 pounds , whereas other personal assistants for Saatchi , a well-known art collector , spent 8,000 pounds or less a month . The trial of the former couple began in London on Tuesday and will continue over two days at London's Old Bailey court house before a jury returns its verdict next week. Lawson 's reps have declined to comment on drug use allegations made in court . The couple 's former assistants deny embezzling large sums of money .
NEW : Testimony from Charles Saatchi , Nigella Lawson 's ex-husband , is expected Friday . The trial of the former couple began in London on Tuesday and will continue over two days at London's Old Bailey court house before a jury returns its verdict next week. Lawson 's reps have declined to comment on drug use allegations made in court . The couple 's former assistants deny embezzling large sums of money .