Within seconds of leaving work I was trundling down a very narrow central London one way street when a taxi tailgates me revving his engine for about 150 meters - no reason for it as there's no room to pass. I indicate to turn right (he's also going right) and he would have undertaken/overtaken had I not slowed down as a pedestrian was crossing the road. Having turned into the road which is all of 30 meters long he goes for the overtake but of course we arrive at the T junction (as there's no right turn we are both going left) together and he's now overtaking me as I'm also going round the corner forcing him on to the other side of the road. The road turns a sharp right within meters with a zebra crossing with people about to cross. He's no intention of stopping to let them cross and just drives across again on the wrong side of the road. Further down the road he's hooting another cyclist to get out of his way before speeding off to intimidate whoever else. What is the matter with London black cab drivers. I think they're like the dialeks in Dr Who, real evil, exterminate, exterminate exterminate. You just know when one is around there's going to be a scary moment.