The distinction was said to be between between Catholic (Irish-influence) and Protestant. Liverpool buses used to have the same slogan printed differently on each side. To avoid the rush hour...Treat us fairly, travel airly. (Catholic)orTreat us furly, travel urly. (Protestant)The first accent also has something that sounds like 'neoo' for 'no'. My gran had the first accent, according to my mum, although she wasn't Catholic, but one side of her family was.