Barry and Annie, Mick is originally from England as well (moved here about 15 years ago), and gets a ribbing a lot over certain words. We still argue over herb or (h)erb, but have decided to call the whole thing off with tomato, and the rest. Our 3-year old has a funny accent with certain words (mainly water), but I imagine that will go soon, as American is more prevalent in our house. He does call our backyard 'the back garden' though, and there are a few other phases we use around here that are more English. Mick still says garage, aluminum, labratory, and a few others as the English do. I have to say though, when Mick goes back to visit the family, everyone there thinks he is American, everyone here thinks he is from Australia, and the Kiwis are the only ones we have met, that get it right. Poor guy!
It was funny, Mick's company asked if folks knew different languages so they could act as translators when folks were visiting from other countries. Mick, trying to be funny, put in that he spoke both English and American. Sadly, his company has no sense of humor.
Ah, the joy of language!