Freestyle Dance

Especially for Olivia, who asked very nicely! These are all I could find though - JustDance promotions might be able to give you more info, there's the Blackpool Dance Festival, next event in October and, finally, The Sharon Ann Dance school, who again may be able to point you in the right direction.

Sorry I couldn't be more helpful, I'd have thought there would be many more links that would've shown up in a search - possibly the best one for information might be the British Association of Teachers of Dance, as mentioned by another commenter, hope that helps!