Jude Law is to become a dad for the fourth time after a fling with a mystery woman.

The actor – who is currently single - has three kids from his marriage to actress Sadie Frost - Rafferty, 12, Iris, eight, and six-year-old Rudy Indiana Otis.

And number four is due to arrive in the Autumn, it's emerged.

His spokesperson said: "Jude Law can confirm that, following a relationship last year, he has been advised that he is to be the father of a child due in the fall of this year,” says his spokesperson.

"Mr. Law is no longer in a relationship with the individual concerned but he intends to be a fully supportive part of the child’s life.

"This is an entirely private matter and no other statements will be made."

Whether or not Jude is brimming with baby joy is unknown, although he didn't look very happy during his run-in with a female photographer in London last week.

Stars on daddy duty