Email from Charles Saatchi revealed by Judge Robin Johnson

Nigella Lawson used cocaine, cannabis and prescription drugs while married to millionaire Charles Saatchi, it has been alleged.

At Isleworth Crown Court yesterday at the trial of Italian sisters Francesca and Elisabetta Grillo – who deny fraud against Charles Saatchi’s company Conraco Partnership – Judge Robin Johnson read out an email sent from Mr Saatchi to former wife Nigella.

In the email, the millionaire art dealer accused Nigella, 53, and her daughter Cosima, 19, nicknamed Mimi, of taking drugs.

The email read: ‘Of course now the Grillos will get off on the basis that you (and) Mimi were so off your heads on drugs that you allowed the sisters to spend whatever they liked and yes I believe every word they have said.’

Judge Johnson said the drug-taking claims could be reported even though the trial against Francesca, 34, and Elisabetta, 41, is yet to commence.

The sisters are accused of going on a £300,000 spending spree with a company credit card while working as Charles Saatchi and Nigella Lawson‘s assistants.

Summarising their defence, he said: ‘Miss Lawson is a user of class A and class B drugs on a daily basis, this was a guilty secret kept from her husband.’

Prosecutor Jane Carpenter said: ‘This is a totally scurrilous account which has been raised by the defence. ‘

Nigella Lawson‘s publicist Mark Hutchinson said: ‘As proceedings are live we can’t comment at the moment.’

The case was adjourned until today.

Nigella and Charles Saatchi got a quickie divorce in July.

The couple were granted a decree nisi at London’s High Court just weeks after Charles, 70, was photographed grabbing Nigella‘s neck at a restaurant.

SEE PICTURES Nigella Lawson: Her weight loss story

SEE PICTURES Nigella Lawson in celebrity chub-alikes

SEE PICTURES Nigella Lawson looks happy as she leaves Scott‘s restaurant in London