Yes Terry, give the self-effacing Bob Thursby my regards. I once safety-piloted for him (16/6/66, C150 G-ATEG), and I remember him saying modestly that instrument flying would be a lot easier without the third dimension!
Ken Winter much improved that beard and - after Cambrian merged into BA (1974), perhaps partly to retain his command - spent some years continuing to fly Viscounts around the Highlands and Islands. Around 1978 - 1980 I met him when I had a day off in Glasgow, and he took me to Benbecula and back on the jump seat. Not sure if a non-employee would be permitted to do that today...
Their chief pilot, he told me, had ordained that they should fly VFR as much as possible, so most of the route was flown at around 1000 ft agl/amsl. On the way back, we flew past the mouth of Fingal's Cave. Unfortunately, I didn't carry a camera to work in those days.
So whatever lured Brian Williams away from Cambrian: Biafra?