When I went for a ride with a police instructor on a Bikesafe day I was first off, police bike behind me and other punter behind him. After 2 or 3 minutes he put his blues and two's on and waved for me to stop which I have to admit was a bit unnerving (first time nerves). He came over to me and said that I'm not doing an IAM exam, he wants to see how I ride in the real world. So, off we set again and had a great 20 minutes or so of quick (but not illegal) riding and overtakes. At the end of that he said, that was very good, just a couple of points. I didn't indicate left when taking the first exit (which was straight on) at a mini roundabout as the oncoming traffic wants to know where you're going even if they are not going that way. Secondly he wanted me 12 inches further out to the right on left handers. I then had great fun trying to keep up with him as he took the lead to show me how far over he thought I should be.
Take from that whatever you will but in the case of the mini roundabouts, I wasn't indicating because I didn't think my actions were going to affect anyone else and he disagreed. Just goes to show its not all black & white I suppose
Everyone should have a go at the Bikesafe rideouts - a bit unnerving for a while but really good fun.