Much of this comes to a question of worst in what respect -- Crime, expensive to live, congested? Some people consider a place to be "bad" if they don't have 24-hour shops, pubs, and nightclubs right on their doorstep. To others, that's a positive benefit.
And we keep telling ya Yorkshire is the place to be! Well, except for maybe Doncaster...
I can't say I was impressed with Bradford the one time I visited it either. The film, photography and TV museum was the only thing worth stopping there for.
Islington ? ? ? ? ?
I can't figure that one out? A fairly nice part of town
I haven't been through Islington for a long time, but 15 to 20 years ago it was an absolute dump of a place. Just getting off the northern line at Angel station was enough to give a taste of what was above. Maybe it's one of those areas like Docklands which has been "done up" and is now supposedly a nice area.
Places certainly change over time, and I think this might influence some of the results in these surveys, because people will vote for somewhere (good or bad) as they knew it some years earlier when they lived or visited there.