WS's strategic media group, headed by vice-chairman Michael Prescott, is now handling all media enquiries for the couple. Former Sunday Times political editor Prescott is also attending the court case.
He said: 'It's a delicate brief,' adding, 'one of the obvious things we can do is clear up any inaccuracies or misunderstandings in the media.'
He said this includes refuting suggestions that the Douglases are suing for millions of pounds. They are in fact claiming £500,000 for loss of income and damage to their careers.
The case was brought following a spoiler operation by celebrity magazine Hello! over rival OK!, which had signed an exclusive £1m photo deal with the couple. Hello! published its own photos, taken without the couple's permission. OK! is now seeking around £1.75m in damages.
Media enquiries in the US are being handled by Zeta-Jones's retained agency PYR Public Relations.