Pole classes in Germany

Heya Ladies. I am a brit living in Germany due to being in the forces and was wondering if anyone knows of any classes that are in the north of Germany? I'm not a million miles away from Hannover, but would prefer somewhere a little closer. My other nearest 'large' cities are Bielefeld, Gutersloh, that sort of area. I've searched online for classes but haven't been very successful in finding any. Anyone else close by to me? I know there are a few of you further south, but would be keen to know if there's anyone in my area. Nicki. x