Hi :)
I was put in dancing school from 4 years old and did ballet, tap, modern and other types of dance and loved it.
Ballet is hard, check if there are any adult classes for more of a hobby type. It can be very hard to progress to a high level, very dependant of figure (even Darcy Bussell isn't a normal ballet figure!!) and takes a lot of training even to get onto point, years of geting your feet ready - never try it on your own - one my tapdance teachers did before she was ready, broke her toes and could never do ballet again!
How about checking out salsa/latin classes (La Tasca restaurants do them if you're near one) or trying your local gym as some do classes there.
Tap is a lot of fun and i'm sure you;ll be able to find classes somewhere :)
Try here...
http://www.danceweb.co.uk/
xxx