My ma is scottish, been over there a lot as a kid in the 90s when we had Laudrup and gazza, always been about the football not politics.
My dad isn’t a rangers fan but supports Chelsea since the 70s got me into them as a kid, that blues brothers connection is mostly in last 20 years and I doubt Londoner’s give a fk about it more a northern ireland thing. Like who suppported Chelsea in 80s and 90s outside of London.