BBC Backstage has staged a few Google Maps "mash-ups" of their own.
The first hack uses Gmaptrack and plots traffic cameras on a Google Maps overlay then pumps in a live camera feed. Pretty cool..
The next one posts locations of local BBC news by county. A bit less interesting than the cams hack, but it is still a functional service.
Both are pretty good examples of how the BBC is using Google Maps UK! Wondering what BBC Backstage is? Well, here you go:
backstage.bbc.co.uk is the BBC's developer network to encourage innovation and support new talent. Content feeds are available for people to build with on a non-commercial basis.
Found here and here