* How about a hill walking certificate
* A scrambling certificate for grade 1 and 2 routes, and an advanced cert for harder
* IRATA certs
* Private pilots' licence
It's a sliding scale, at some point it's silly and intrusive and at the other end it's sensible safety.
Personally the idea of an mandatory SRT cert for a club sounds very silly to me. The nearest equivalent I can think of would be a certificate needed to participate in climbing with a climbing club, which also seems silly to me. Although as a disclaimer I don't SRT as part of a club so take my posts with a big pinch of salt