I was under the impression Tern was a US based organisation where litigation is the norm. Or could it just simply be that there's nothing to answer to. Accidents happen and I'm sure frame breaks were not part of some conspiracy to boost casualty rates !
Since as no one has come back and posted any answer to my question were any successful claims made against Tern, it seems safe to assume none were ever made. Could that be because people involved in accidents thought they'd be wasting their time, or were they advised negligence (or whatever) would be difficult to prove.