The burglary woke the Osbournes, police said, and “a man” grabbed one of the intruders before the burglar broke free and jumped from a 30-foot-high, second-floor window.

A “large amount of jewelry” was stolen, said police, who wouldn’t say whether the man who struggled with the intruder was Ozzy.

One of the burglars wore a ski mask and used a ladder to climb into the second-floor room of the mansion where a “large amount of jewelry” was stolen. Both burglars apparently escaped in a van, and the man who jumped was probably injured by the fall, police said.

Jay Marose, the Osbourne family’s spokesman in the United States, said that he spoke to Sharon Osbourne on the phone Monday night, and that neither had been hurt.

“Ozzy and Sharon were in the house. They were woken up by the incident eventually. My understanding is that the intruder was discovered in … Sharon’s dressing room,” adjoining the main bedroom, Marose said.

He also declined to say whether the man who struggled with the intruder was the 55-year-old Osbourne, the former Black Sabbath frontman who starred with Sharon and their family in the MTV reality show, The Osbournes, which was filmed in their Beverly Hills, Calif., mansion.

Marose didn’t know the value of the stolen jewelry, but said he was sure it has “financial and sentimental value.”

The burglary took place in Chalfont St. Peter, Buckinghamshire, a county bordering London.

Osbourne and his wife are staying at the mansion while she appears on the British TV talent show The X-Factor.

The Osbournes’ children weren’t in the mansion, police said.

Last December, Ozzy Osbourne spent eight days in a coma after breaking his collarbone, six ribs and a vertebra in a quadbike accident at the Buckinghamshire estate.

Sharon Osbourne battled colon cancer last year. She saw her American talk show axed earlier this year, but has since bounced back as a judge on The X-Factor alongside Louis Walsh and Simon Cowell.