I grew up in semi-rural Lancashire (born 1955), in a village halfway between Chorley and Preston, and went o Grammar School in Preston.
Boys got on the bus from various points along the route.
I could easily tell if they came from: Chorley, Whittle, Clayton, Bamber Bridge , Walton-le-dale, Preston: A 9 mile stretch
In school, I could identify those from North toward the lake district, North East of Preston (into the Pennies) or South west into rural lancashire
@Julia9054
Just read your other post about Lancashire accent getting stronger to the east.
Agree but the local regional variations are still distinct.
Which bit of Preston were you dragged up in?