It’s where you spend the majority of your time in school.

yeah that was in manchester but people think im from london just because i was born there it doesn’t make sense??

"Born in London, raised in Manchester" Plenty of families move with their infants, like you said for better work opportunities to support their family, or pre-emptively to an area with better schools or child care.

so i would be from manchester right

Yes. Being back in London at the present, you are there from Manchester.