Wheels of No 10 spin turn on Samantha Cameron

By Tim Walker Published: 10:00PM GMT twenty-four February 2010

David and Samantha Cameron Photo: GETTY

"Briefing opposite her has already begun," discloses my man in Gordon Browns bunker.

Astonishingly, Labour officials explain that David Camerons wife, who remade the fortunes of the Mayfair stationer Smythson whilst raising 3 children, is "lazy".

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The plan is to review Mrs Cameron, 38, unflatteringly with Sarah Brown, 46.

"Much will be done of Sarahs gift work and reporters will be speedy to have comparisons with the volume of work that Mrs Cameron does for charity," says my mole.

Mrs Brown, who gave up her pursuit as a open family senior manager when she was awaiting her initial child, has taken an increasingly distinguished domestic purpose given the Prime Ministers station plunged in the perspective polls.

This week, she appeared on GMTV to urge her "hero" opposite allegations of bullying.