On the liones ans Gymbaroo and Kindermusik (who also have a web site) is Hey Dee Ho Music (also online).

Be just does an activity playgroup run my a child OT and a Speech pathologist, so it incorperates the aspects of the others.

Once a week I take her to the indoor play centre and if the weather isn't too hot (I have a very pale skinned red-haired dd) I will take her to an outdoor play ground once a week.
Indoor play centres often have gymbaroo type programs that they run so that may be worth looking into.

For physical development I would go swimming... for language development I would opt for Gymbaroo or Kindermusik or Hey Dee Ho.