It seems to depend on when you did your PPL. When I did mine it was a bit a case of muddling through, but since JAR there is a practical test. However, I've been told by a friend who's been flying for yers and years that there was a practical test in the past, then it was stopped - so it's just those of us from the few years in between. But I agree - know what you want to say, keep it brief, and don't panic; if you forget something the controller will simply ask you for it if he wants to know.