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Entertainment Press / Splash News 1 / 6

A representative for Sam Mendes has furiously denied allegations his marriage to Kate Winslet broke down after he struck up a relationship with British actress Rebecca Hall, branding the claims "ridiculous," "utter nonsense," and "untrue."

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The couple announced their split on Monday, revealing their seven-year marriage came to an end earlier this year.

Speculation has been rife over the reason for the break-up, and recent reports alleged Winslet ended the union after her husband grew close to Hall, who was cast in two of his plays.

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But a spokesman for Mendes is adamant the reports are completely unfounded.

The rep tells E! Online, "Utter nonsense. Untrue and ridiculous."

He also tells the New York Daily News: "There is absolutely no truth to this. Sam and Rebecca are professional colleagues. That's it."

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