See this then Ebor Fiddler !!

For speakers of the Lancashire dialect the accent/dialect from even a neighbouring town is perceived as different as for example Cockney and a Somerset accent. Thus many of those who live in Bury pronounce the town name as Burri yet speakers in some of the neighbouring towns would say Berry. To assume, therefore, that all Lancastrians strongly roll the r (in fact none of them do; that's just a non-rhotic speaker's way of trying to describe rhoticity) as did Gracie Fields (who had a typical Rochdale accent) would be greeted with the same derision as might be visited on those North American actors who assume all English speakers are Cockneys. Older speakers of South Lancashire, for example, could place a person with a remarkable degree of accuracy, with the distinctive accents of Wigan, Bolton, Leigh, Chorley, Westhoughton and Atherton having their own sometimes subtle (but often not) differences in pronunciation.(Wikipedia)