During Lawson's appearances in court at a fraud case involving the cook's former assistants Elisabetta and Francesca Grillo, she confessed to taking cocaine but denied allegations she was a habitual drug user, reported Daily Mirror.
The Grillo sisters were found not guilty of fraud in December 2013, and it was announced in January that Lawson would face no action from police over her admission of drug use.
Lawson will appear on the Michael McIntyre Chat Show, show on March 31 to promote her re-designed and re-packaged Nigella Collection.
Lawson appeared on Good Morning America in the US at the start of the year, saying that she saw no point in dwelling on the trial.