Hi there!
I teach dance classes for all ages from three upwards; you might want to check out our website. Ballet for under fives is currently on Saturdays at 10.45am (next term it'll be at 10am, but the good news is it gets later as the children grow older and more advanced)! When five, we also have Modern Theatre Dance and Tap; all classes lead to ISTD exams and we have theatrical performances and activities for the more seriously interested.
That class is £3, (it's only 30 minutes till they go up into the Primary class), and you can pay weekly for the first term.
It isn't that close, being in Wandsworth ROAD, (near Lavender Hill), but I have pupils who come from Sutton and Meopham in Kent every Saturday and Wednesday! (You can check out our website if you want to give it a try with no obligation:
http://www.danceacacia.com). Joan