Just before Xmas our house was broken into, trying to get the keys to my Z4 even though the front of the drive has bollards. The police caught the $@*%&**@'s (insert the expletive of your choice). They will be sentenced in March after spending a few months locked up.
The police said they had been doing the same all over the north birmingham area, stealing Land/Range Rovers, Audis BMW. It's more than likely they are part of a larger gang.
After giving it some thought recently I have come to the conclusion that it was not my BMW they were after, but my lovely 2004 1.8 Freelander.