Something I had forgotten was that British Airways ATP's operated a weekly (Sat) charter from/to Jersey during summer 1997.
The BA Express ATR42 did a Jersey flight on Saturdays for at least one summer season as I spent a pleasant day on the Island. I can't remember if it was a scheduled service or a weekly charter I was booked on but I remember it did at least one W pattern before returning me home in the evening. Don't ever remember an ATP doing the flights.