Just thought I'd mention British Air Ferries -I loved working with, and flying around on those wonderful Rolls Royce Dart powered Viscounts and Heralds (I can still close my eyes and hear the whine of those turboprops).
Plus my first job in ops from school - great
Great flights on them plying back and forth to/from the Channel Islands on Summer weekends in the early to mid 1980s, Ostend, Basle, Milan and Lourdes to name but a few places.