British actor Jude Law fears for the safety of his ex-wife Sadie Frost and their three children after burglars targeted their London home for a second time.

Frost, 42, was the victim of a robbery last weekend (11Jan08) when thieves sneaked through a back door of her house in Primrose Hill, North London - while the fashion designer was in the house.

The burglars are said to have taken cash, credit cards and a laptop storing the family’s personal information.

It is the second time thieves have struck the property after a raid last year in which cash, photographs and the family car was taken.

And now Law - who divorced Frost in 2005 - fears for her safety and that of Rafferty, 10, Iris, six, and four-year-old Rudy.

A source tells British newspaper the Daily Mirror, "Jude really cares for Sadie and was very upset to hear of the break-in. His first concern is for his ex-wife and their children.

"It was a particularly distressing thing for Sadie and he’s there for her.

Sadie can’t believe it’s happened again, especially as she was once more in the house (when it happened).

"She’s freaked out by the whole experience and is finding it difficult to be on her own in the house." A police spokesman confirmed an investigation has been launched in a bid to catch the robbers.