Millionaire art dealer Charles Saatchi is expected to be questioned on details of his marriage to ex-wife Nigella Lawson today when he gives evidence in the trial of two former personal assistants to the celebrity couple.

Two personal assistants to Charles Saatchi and his ex-wife Nigella Lawson complained they were “being treated worse than Filipino slaves” when they were confronted over their alleged spending sprees at the couple’s expense.

Millionaire art dealer Charles Saatchi’s accountant has told a court he did not tell his boss and his ex-wife Nigella Lawson his suspicions that their personal assistants were spending thousands of pounds of their money as he did not want to bother them with “trivial matters”.

Two sisters who acted as personal assistants to Nigella Lawson and her former husband Charles Saatchi will stand trial in Britain today accused of using a credit card given to them by the celebrity couple to buy things for themselves.

Charles Saatchi accused his former wife Nigella Lawson of being "so off your heads on drugs" that she allowed their personal assistants to spend whatever they liked.