Very sad news.
A small correction, if I may, to the CV given by the OP. Phil's first operational Squadron was indeed 8 Sqn at Khormaksar, but before that he did a tour as a Vampire QFI at Valley - I was one of his first pair of students there in 1962-63. He was a great guy to fly with, and we stayed in touch until a few years ago. I had been unaware of his dementia: very sad to hear that.
RIP Phil.