Try ringing one of the ones in the same county and they may know of one. Sadly the Kennel club seem less than helpful re ringcraft clubs, I suspect they are grouped strictly by county so you don't get sent the ones in the next county that may be closer to you etc. Also many ringcraft groups are casually run and not KC registered with all the red tape that involves.
Haywood and Radcliffe hold classes on the fourth Monday of the month. They are held just on the outskirts of Bolton. www.heywoodandradcliffecaninesociety.co.uk Not sure how to do links, but the above is their website.