I was born in Manchester during the Colin Bell era and my Uncle bought me the red and black strip when I was 4 (one of my earliest memories) supported City ever since and always will.
My 1st job in an office was 400yrds from O.T. (late 80s/early 90s) surrounded by and working alongside United diehards.
But I still supported City (whilst inside cursing my Uncle a bit!)
BUT NOT ANYMORE!!!!!
As regards the London thing, I can't really pick one, maybe Crystal Palace? Whichever team is verses Man Utd gets my support!
When City were really struggling in the 90s I was always a secret fan of Newcastle Utd. in the PL. And I will love it - love it, if they can grab an away win at O.T. on Boxing day this week!