I've been traipsing all over central London for you today, testing four pairs of noise-cancelling headphones, the HA-NC250 from JVC, some Bose Quiet Comfort 3 cans, the PXC-350 from Sennheiser, and finally, the Creative Aurvana X-Fi. How do they fare on public transport in London? Check out the video above, where I test them on the tube, the overground train, a double decker bus, and walking around Piccadilly Circus. And yes, in case you're wondering, I *did* say "King's Cross St. Pancreas". I am a doofus...