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94% availablity? Not quite. There may be coverage for 94% counted by BT (sorry, the puppet OpenRetch's) exchanges, but in many areas high density (urban, suburban) areas there is still a wait list as the street cabinets are full and BT are still dragging heels adding more, using every excuse possible to avoid capital investment. In those same areas there is still too much low quality, badly routed local loop to provide the line quality required to get more than the minimal signal.