The strange thing is, it's not really a new town at all, the market really does date back to Henry III, and when I first moved here back in about 1977, there was no ringroad, that was built (as were the inevitable roundabouts) sometime in the 1980s. Architectural charm isn't it's long suit, to be sure, nor are landmarks, especially now the Dolphin Centre (which was horrible but memorable) has gone to make way for more luxury 2 bed apartments. Here's how it used to look:
http://www.johnpugh.com/photographs/misc/IMG97.jpg