Keys to the Crown Jewels Stolen?

At least, that's the story:

The locks at the Tower of London, home to the Crown Jewels, had to be changed after a burglar broke in and stole keys.

The intruder scaled gates and took the keys from a sentry post.

Guards spotted him but couldn't give chase as they are not allowed to leave their posts.

But the story has been removed from the Mirror's website. This is the only other link I have. Anyone have any idea if this story is true or not?

ETA (11/14): According to this BBC article, keys for a restaurant, conference rooms, and an internal lock to the drawbridges were on the stolen key set, but the Crown Jewels were never at risk.