England's population make-up is considerably different from that of Scotland, as it has always been a more transient eg. People move around for work, study, family reasons etc. So it wouldn't be unusual for someone from Northwest of England to reside within the home counties.
London's a s***ehole.
I'm indifferent to Man City, to be honest. You hear a lot of sanctimonious drivel about the money and all that, but a big whack of their fans were supporting them before the money came along and a decent number will have seen them relegated, all in the shadow of a much bigger, richer club.
It's hard to take a lot of the whinging seriously from people who have latched on to other big clubs from the off - you can't really be sitting in London with a Man Utd badge as your Twitter profile picture and piss and moan about glory-hunters.
Every big team has became a big team because they've had more money than most others.
Not everyone has a 'local' team, for example, if you stayed in the home counties - Haywards Heath or Hemel Hempstead for example - who are your local team? Yes, there will be teams within a 20 mile radius of various status, but you may not feel an emotional attraction or attachment to them. Man United were a club of convenience for many, they played nice Football, had the best players at the time, offered a bit of glamour, excitement and entertainment, were easily accessible and provided the perfect 'ready made' turnkey experience for the brand new Football fan.
Also, the name 'Man United' has more than one meaning, to most of us Man may be shortened for Manchester but if you are a young kid in Seoul, South Korea or in the Philippines and you are getting your first seeds of interest in Football, it could easily translate as 'Mankind United' - a club for everyone, everywhere.
There has been some top notch marketing over the years behind that club. Despite all their hundreds of millions invested from their Arab owners, Man City will never come close to being as popular Man United off the Park, and Man United will return to the top of the tree in footballing terms soon.