Wow . . . I thought they were British too. There's ethnocentrism for you, I suppose. Now that I think about it, the accent is obviously Australian. That's embarrassing. At any rate, it should be considered a compliment that I automatically associated something so horrifyingly terrible with Britain rather than the great state of Australia. Maddy also seems to like them more than any other kid/cartoon stuff (except 12 Oz. Mouse, which is awesome, but probably only appropriate for infants who don't know what's really going on and being said).
By the way, 12 Oz. Mouse is awesome -- possibly the most brilliant thing to be on TV since Looney Tunes. Most people hate it. But it's because they're half-retarded. It's fantastic. And something about it (possibly that it looks like it was animated by kindergarten kids) absolutely absorbs infants*
*Sample size = 1