I think I had known there was business traffic there later but by the early 80s my grandparents were all long gone so I passed by extremely rarely if ever.
Rethinking my last post, we moved to Welwyn Garden City in October 1959 so that would predate Tridents. I've never had a great interest in civil aircraft anyway and at the age of seven my recognition skills were limited, to say the least.
Panshanger, which I'd known for a while, as well as any 3 to 4 year old could anyway, and then again in my middle teens was only a mile or two from where we lived. That has been shrinking steadily over the years, in fact my sister now lives on what was airfield land, or very close to it at least. From what I understand, what's left of it is unlikely to reopen and is earmarked for housing.