Just come across this thread- I was on 360 at Watton at the time but in Devon on leave - I remember the accident well, as when I heard on BBC radio of the collision I naturally wondered if it was a Canberra from Watton, as our SID climbout and Marham's coincided, but at different heights. Also Rog Morton and I had both been on 22 Gnat course at Valley together. I recall him as a really nice guy. RIP