Me too, and quick mirror glance if I can. OTT...maybe, but better safe than sorry. I try to keep my eyes everywhere, esp in central London! yep! the key is to keep a mental note of whats around you at all times... Another trick is to be the first to the roundabout. So overtake everyone, brake late, and you'll know nobody is gonna cut you up... still do a lifesaver though, just in case some idiot car driver gets annoyed at being passed by a bike and tries to keep up. i've seen that happen before - I just let the car sail past on my left and bump over the roundabout whilst chuckling to myself