As I said, I saw one over Chesham (Bucks) heading towards Bovingdon in about 1954. It must have been that date because I was only 5 years old, didn't know much about 'aeroplanes' and we moved house next year. As Bovingdon was only about 4,800ft, I'm pretty sure it didn't land there; I don't remember the noise but I rushed indoors and told my older brother (who was keen on joining the ATC) about it and he hit me saying I was lying!