But would not the member's discount at CCC sites pay for the£41 annual membership fee after your six nights using them?
If you are a cycle camper, it's more like 20 nights at C&CC sites to recoup the £41 in reduced charges. Given the limited holiday time for someone in full time work and the normal proportion of non-C&CC sites, my view is that paying membership is only worth while if you want access to the member-only certificated sites.
The 6 nights will be for motorised campers (it will vary depending on big tent/caravan. electric hookup etc).