I vaguely recall Brymon operating into Gatters with Twotters as far back as 1977 or maybe more? Plymouth/Newquay? Brum? Think my Dan-Air mate John flew Brum/Gatwick on one, must ask him about it next time we have a beer.
Definitely remember one orbiting briefly south of the airport then turning from base leg onto final for 26 probably no more than half a mile out, a cheeky slot in between the afternoon parade of returning BAC 1-11s!
Who was the the other Dash 7 outfit at LCY with a clever pin stripe shirt/tie motif on the fin?