If you want to allow Apple to be your security blanket and to control everything, and I do mean everything, choose Apple. If you are happy with a more open way of doing things choose Android.
I chose Nexus 7 (first version) and still think it's great.
One feature I don't see mentioned anywhere is is the ability to put my Nexus 7 into the inside breast pocket of my jacket. Anything more than 7 inches wide just can't fit!
To think that London, or anywhere else for that matter, does not belong to any one demographic
Adult early 30's - very difficult.