I was in the same club as George (Edinburgh Road Club) in the mid 90s but I never met him. Not sure why he was a member of an Edinburgh club when he lived in Fife... We got to hear about his exploits from another cycling club legend, club president Jack Murdoch, who must have been around 80 years old at the time. Jack was old-school - riding far more miles in a year than any of us youngsters, I don't think he ever owned a car. He'd mention regularly that he'd seen George Berwick out and about on his recumbent, "it's the bike of the future!"
Jack persuaded him to write an article about 24-hr time trials for the club newsletter. The only part I can remember is that George only started wearing a helmet after he'd woken up more than once lying in a roadside verge in the dark, having fallen asleep and toppled over.