There were certainly quite a few Caravelle regulars in a Gatwick in the '70s, others included SATA, Aviaco (I think?), SAM and at least two other Italian and Spanish operators whose names escape me.
One oddity I recall was a Midwest Air Charter Caravelle, N901MW or N902MW I think, trailing down Green 1 from Strumble to Dover - must have been about 1980. Think it's callsign was the registration.