On the DVD box sets, after season 2 or 3, you get the option to remove the laughter track as they call it... I find it much better without. I have the entire 11 series, the box film set and also the book based on the series detailing every episode. At one point I did have the book that it was based on but that has been mislaid after all these years. All that said, you don't need the DVDs in Australia because the is always a channel showing at least 5 episodes every weeknight (the same 5 for 1 week but rotated so if you watch the same time slot each night you do actually see all of the episodes not the same 1 five times). I suspect the UK is now doing the same from what mutt stepfather says. He's just borrowed season 11 though because they are convinced that they haven't see it all.