The two Gannet loss, I was at Linton-on-Ouse at the time. We heard about it and sobered up (temperamentally, that is, being young and convinced we were immortal) for a while. I'd always understood it was during night formation, I don't have any other info.
The night barrel roll! I can certainly believe it could have been Pete Frame, knew him well back in those days and very sorry to hear he's no longer with us. Certainly, Chris Brockway had a reputation for barrel-rolling Gannets by day.
Heavily involved in non-aviation projects for most of the autumn but will certainly continue to post fragments of a mis-spent youth as the opportunities arise.
Mike