'where is your job going to be' is a tough question

i kinda wish i was going on a tier 2 visa with a job waiting...
but no

i'm moving jobless (on a Tier1) ...
But anyway, there is over 50% chance it will be in canary wharf (or the city).
Canary Wharf is on the east side somewhere near the Docklands and stuff, or no?
I hear the West or North West or North is 'better' ? But from the perspective of a person who doesnt know anything (and doesnt know and hopefully doesnt care about the whole north versus south of the rive thing)... wouldnt it be better for the commute to live somewhere near c.w. or at least on the jubilee and/or the DLR lines in order to ease the commute?
I had a co-worker who came from London and he worked in canary wharf and lived somewhere in greenwich or south greenhich or something...
As an uneducated ballpark guess, say you want to look for a 1-Bed Flat that is £200-£250 a week, is there enough areas to look for, or mostly areas that you would be priced out of?
I'm after just plain safety and easy access to transport/food/essential while adjusting...
I dont know...