Welsh Version - y Dywysoges Ar Bwgan

I first watched this film when I was six years old, only thing was was that it was the welsh version and it was in Welsh. I loved it even though I couldn't understand a single word (weird, I know!) - but it's lovely - the names of the characters are different - the princess is called Rhuanedd and the boy (is it Curdie?) - called Rhidian, and the gobblin is Coblyn! I recently managed to buy a copy from sendit.com and then I realised that you could buy it in English. I have tried loads of places but I have been unable to get a copy. Any help? I need an internet site that will send to England.