LONDON (AP) _ ``Titanic'' star Kate Winslet and husband Jim Threapleton are separating, the actress' spokesman said.

No reason for the couple's split was given.

``No other parties are involved in this amicable and respectful separation. Their daughter Mia will remain first priority for both of them,'' Winslet's spokesman, Robert Garlock, said Monday.

The 25-year-old actress met Threapleton on the set of ``Hideous Kinky.'' She once remarked that she ``fell in love at first sight'' with the third assistant director of the film.

The couple married in November 1998. Their daughter, Mia, was born last October.

Winslet is due to appear in ``Enigma,'' which Mick Jagger produced, about British code-breakers trying to unravel German U-boat ciphers during World War II.

The movie premiered at the Sundance Film Festival in January and is expected to be released in theaters next year.