CSMA alone used to be £18. However, it now seems to be free. certainly, if you're in Britannia Rescue they waive this fee but still send you the CSMA mags. My Standard Britannia Rescue this year (roadside assistance and/or recovery as necessary and onward journey to destination of choice, but not home start) is £79 this year. That covers me and the missus as named drivers with personal cover for any vehicle we are driving (handy for us as we also drive a couple of lab rescue vans) + my son's car as a specified vehicle. So basically that covers 2 people in any vehicle + a specified vehicle. So with the personal cover we don't need to specify our own car. They also do different combinations of cover including home start of course. See https://www.csma.uk.com/