And as another footnote to this amazing Pprune saga - the scanned logbook page (as I'm sure many noticed but none commented) is of course from an RAF Form 414 - Pilot's Flying Log Book. I don't know of Bryn but I assume he was ex-RAF and kept his logbook going (and made sure he had a few spares when he left!) - I know many who did just that.
You used to be able to get special "dirty yellow" Snowpake to match the colour of the pages too ......