Shipman Road's not great either but for me, (and going a bit beyond SE23 - sorry!) the worst roads are when I "cross the border" into Southwark. They've finally resurfaced Crystal Palace Road (or the section I ride on anyway) but Adys Road, Lyndhurst Way and Southampton Way (all SE15) make me (almost) wish I hadn't freecycled my old clunker to make space for my shiny new road bike