David & Victoria Beckham's London Mansion Burglarized While Couple Inside Home

David and Victoria Beckham's London mansion was burglarized late last month while the couple and their 10-year-old daughter were still inside the home ... but, thankfully, everyone is safe.

Cops confirmed to TMZ Sports that in the early morning hours of March 1, officers responded to the Beckhams' Kensington home for a report of a burglary that was believed to have taken place between 8:30 PM and 11:30 PM on Feb. 28.

Police tell us "a number of items were reported stolen" ... and, according to The Sun, that included expensive "designer and electric goods."

The Sun reported the break-in was discovered by David's 17-year-old son, Cruz, after he had returned home late in the evening from hanging out with friends.

Cruz reportedly saw broken glass and a ransacked room -- and then helped search the house for the culprit with his father. The alleged thief, though, was believed to have already escaped.

According to The Sun, security video showed the suspect climbing over the Beckhams' gate, then climbing up the couple's home, before breaking into a spare bedroom's window.

The Sun reports that while David, Victoria and the rest of the Beckhams were uninjured in the incident ... the couple is "shaken up" over it all.