I was interested to see the reference to "Mac" McDuall, who looked like everyone's benevolent grandfather, and despite having cross eyes was a great pilot, ex ATA as was the then CFI at West London Aero Club, Joan Hughes when I did my PPL with them in 1955. Mac had a great fund of aviation stories, the only person that I know that knocked the funnel off a steamroller with a Wellington! All retailed after flying in the bar!