LT One Mans Junk Street Markets Portobello Edgware RoadOriginal vintage London Transport poster One man's junk is another man's treasure, and London is a hunting ground for the unlikely. Street markets, like the Portobello, or the casual emporiums off the Edgware Road, offer unfashionable wares for the sober galleries of next year's rave. Back your fancy, be it beads or vintage radios. 'How To Get There', 1 from most Underground station ticket offices, will put you on the right track featuring the London