In the 1970s Brymon occasionally operated a DHC6 on the St Mawgan - Heathrow. We were waiting for the Herald one Sunday afternoon to take us to LHR to catch the BA shuttle to EDI for a JMC Briefing. Fortunately there weren’t many of us as the Herald was broken and the Twin Otter turned up instead. I’ve wondered since what the pilot thought about having two Nimrod pilots and a pair of navs peering over his shoulder as he performed the arrival at LHR.
YS