Rough areas of Swindon, hmmm, gorra be Toothill, Penhill (though it's not as bad as it used to be) and the Park North/South area which I believe is currently under redelevelopment. Park North/South is the only place I know where the local drugstore used to have security and the co-op replaced pretty much all it's windows on a weekly basis.
...but then, what do I know?
An' there's only the one magic roundabout here, though I heard a rumour they were thinking of making another...