How do you train to be a celebrity's nanny?
27 February 2013 Last updated at 07:25 GMT
Some of the most traditional nannies in the land, the uniformed Norland nannies, are updating their CVs with modern techniques for celebrity clients.
They include defensive driving to avoid the paparazzi, and martial arts to protect against kidnappers.
The BBC's Jon Kay has been to Bath to find out more.