Yeah, I realise my stupidity and misplaced faith in hindsight -- they has a whole bookcase full of logbooks, so it seemed at the time to be the "normal" thing to do.
I visited Altocap a couple months ago and left my details in case they knew anything, but have not heard back.
The guy I spoke to there also mentioned that Airborne Aviation was in receivership, but he did not know the legal firm to contact.
He also seemed to think that Peter's widow might know something about that, but I don't know how to contact her.
Thanks to mates_rates, LexAir, and Capt_Fathom - you are all correct - it was a dumb thing to do, but I cannot believe that the logbooks have been trashed.
It is just surprising that I have not heard anything by mail, by phone, or by email (all of which were in the logbook)
My daughter is in the same boat. We took lessons at the same time, although I had a decade or more records in mine.