Happily about to pull out onto a busy roundabout after a few minutes wait. ******** on roundabout who was giving every impression of going straight on then decided to turn right without indicating. had to brake sharply as he swept in front of me, which resulted in a bump up my tail end. have all details etc, and no damage appears to have been done to either vehicle as very light bump. will be taking it in for a check though. other driver concerned that i was ok. have spoken to his firm and got photos etc. the idiot that caused it all had disappeared completely, oblivious. if i hadn't been stationary for a while and therefore hardly moving at all, he would have hit me pretty much right in the passenger door. no reason to even suspect he was going to drive into my path... silly person. anyway, am ok. though actually, i've not said a single swear word since.