Sennadog,
Have you thought about an aerobatics course. Not only will you get plenty of spins, but flight into and recoveries from unusual attitudes will be very useful. Moreover, you should have a parachute and the aircraft will probably have the facility for jettisoning doors etc (remember even the very best pilots get it wrong sometimes). Plus some of the more exotic aero types require a totally correct recovery technique - again good practice. - Maybe even get a taildragger rating out of it at the same time. (
Alternatively, try your local gliding club. I think that the BGA syllabus still requires proper spin training and I'm sure someone on staff would oblidge.
Englishal, Warriors, Cadets & Archers are not cleared for intentional spinning, but I seem to recall the old Cherokee 140's are. Someone will no doubt correct me if I'm way off.
Father Mulcahy