Answers:
I don't know about getting exactly the species that is surrounded by Cadbury's eggs, but you can buy fondant at any cake decorating supply store, even Michael's carry it.
Other Answers:
I don't know where but it sure is luscious! Hope you find some in time for Easter!
try local stores.
Geez, I ruminate u have to bring in it.
Check out this recipe
http://www.pastrywiz.com/season/fondant.htm
I used to work in a bakery and adjectives fondant is made the same. You can find it at michaels, Wal Mart, over the internet or any store that carries candy making or Wilton supplies. You can even attach your favorite flavor by working it into the fondant before making your candy.