The term 'Yonner' equates with the Scouse term 'Wooley Back'.
TV shows such as: The League Of Gentlemen, The Last Of The Summer Wine, Emmerdale, Where The Heart Is, Heartbeat, and One Man And His Dog, all feature Yonner characters. Even Coronation Street, although set in the more urban City of Salford, features an overwhelmingly Yonner-voiced cast (Deidre Barlow and her mother, Janice Battersby, Fred the butcher, Digby the baker, Sally Webster and Vera Duckworth, to name a few...).
Yonners speak like farmers, wear short sleeved shirts without a coat or a jumper in the middle of winter, drink plenty of Skol lager (like their ancient Viking ancestors), partake in bloodsports, are educationally subnormal, and either shout or mumble when speaking. They are also very adept at peddling bicycles up steep, cobbled streets.