Having checked their details, the towing courses run by the CC and the CC&C are both suitable for novices or inexperienced caravanners. As you have to be a member to book the course, choose which club suits you best.
If you are an advanced driver, or thinking of becoming one, choose the CC&C course as their course, and no other, is a pre-requisite for the advanced towing test.
Most experienced caravanners think we "know it all" so don't bother with a course but I'm sure that all of us, without any exceptions, would learn from one of these courses.